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 Material Information Title: Optima Series Title: Optima Physical Description: Serial Language: English Creator: Mathematical Programming Society, University of Florida Publisher: Mathematical Programming Society, University of Florida Place of Publication: Gainesville, Fla. Publication Date: December 1998
 Record Information Bibliographic ID: UF00090046 Volume ID: VID00060 Source Institution: University of Florida Holding Location: University of Florida Rights Management: All rights reserved by the source institution and holding location.

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SP T IMA
DECEMBER1998

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conference notes 4 reviews 7 bylaws & prize rules 9

OPTIMAmindshapeaer2

gallimaufry 15

DECEMBER 1998 PAGE 2

This is the first in a
series of contributions
to our column by
Robert Bosch. We
to submit solutions to
the problems
to Robert Bosch
(bobb@cs.oberlin.edu).
The most attractive
solutions will be pre-
sented in a forthcoming
issue of OPTIMA!
Enjoy! Karen Aardal

DECEMBER 1998

A Pentomino Exclusion Problem

Robert A. Bosch

NE UNNN
.10 U
U..... 0 f
1 U

Figure 1
Figure 1 demonstrates that it is possible to place
twenty-four monominoes on an 8 x 8 board in
such a way that they leave no room for any pen
tominoes.
Is it possible to exclude the pentominoes with
fewer monominoes? Solomon Golomb, the
inventor" of polyominoes and the author of
Polyominoes. Puzzles, Patterns, Problems, and
Packings, believes that the answer is no. (See [1,
p. 27].) Here, we use integer programming to
prove that twenty-four is indeed minimal.
An IP Formulation
The most straightforward way to model the
problem is to let x equal 1 if a monomino is
placed on the row i, column j square of the
board, and let xj equal 0 if that square is left
empty. Clearly the objective is to minimize
x

And clearly (see Figure 1) the con
strains all take the same form as the
following ones:
1 + X12 + X22 + X3.2 + X33 1,

X13 + 21+ X2,2 + X2,3 + X31 1

X12 + X13 + X2,2 + 3,1 + X32 1
and

X1.1 + X21 + X22 + X23 + X33 1
in Figure 1 from being placed-in its
standard orientation or in any rotat
ed or reflected form in the upper left
corner of the board. In fact, it is easy
(but a bit unpleasant) to show that
63n2 240n + 196 such constraints
can be used to exclude all twelve pen
tominoes from an n x n board.
Results
We used CPLEX (version 4.0.9, with

all parameters kept at default settings) to solve
the IP corresponding to the 8 x 8 pentomino
exclusion problem. On our initial attempt, the
branch-and-bound tree grew too large, and
CPLEX terminated with an "out of memory"
error message.
On our second attempt, we added 84 simple
valid inequalities (to ensure that every 3 x 2 rec
tangle contains at least two monominoes), as
well as constraints to guarantee that the upper
half (right half) of the board receives at least as
many monominoes as the lower half (left half).

HM-DBH HUJBDBD

Figure 2 Figure 3

Figure 2 Figure 3

second attempt required only 690 seconds (on a
200 MHz Pentium) and 5,605 nodes. The opti
mal solution (containing 24 monominoes) is
displayed in Figure 2.
Problems
Interested readers may enjoy trying to solve the
following problems:
1. Devise a better formulation for the n x n
pentomino exclusion problem. Hint: See
Figure 3. Benchmarks; On the best formula
tion we have found to date, CPLEX need
ed only 12 seconds and 15 nodes to find an
optimal solution to the 8 x 8 pentomino
exclusion problem, 42 seconds and 19
nodes to find an optimal solution to the
10 x 10 problem, and 275 seconds and 55
nodes to find an optimal solution to the
12 x 12 problem.
2. A subset of the pentominoes spans a board
if its members can be placed on the board
so that they exclude the remaining pen
tominoes. Devise an IP formulation for
finding the smallest set of pentominoes that
spans the n x n board. For which values of
n is this problem feasible? (See [1, p. 8].)
We will present solutions in a future issue of
bobb @cs.oberlin.edu.
Reference
[1] S.W. Golomb, Polyominoes: Puzzles, Patterns,
Problems, and Packings (Princeton University Press,
Princeton, NJ, 1994).

em MA60

PAGE 3

@

DECEMBER 1998

0

Conference

) DIMACS Conference on Large Scale Discrete Optimization in Manufacturing and Transportation
February 8-10, 1999, DIMACS Center, Rutgers.
) DIMACS Conference on Mobile Networks and Computing
March 24-26, 1999, DIMACS Center, Rutgers
URL: http://dimacs.rutgers.eduNVorkshops/Mobilelindex.html
) INFORMS National Meeting
May 2-5, 1999, Cincinnati, OH
URL: http://www.cba.uc.eduldept/qalcinforms/
) Optimization in Computational Chemistry and Molecular Biology
May 7-9, 1999, Princeton, NJ
floudas@titan.princeton.edu, pardalos@ufl.edu
) Sixth SIAM Conference on Optimization
May 10-12, 1999, Atlanta, GA
URL: http://www.siam.org/meetings/op99
) Optimization Days 1999
URL: http://www.crt.umontreal.ca/JOPT/
) NSF/CBMS Regional Conference in the Mathematical Sciences
Combinatorial Optimization: Packing and Covering
May 24-28, 1999, Lexington, Kentucky
URL: http://www.ms.uky.edul~jleelcbms.html
) Seventh Conference on Integer Programming and Combinatorial Optimization IPCO '99
June 9-11, 1999,TU Graz, Graz, Austria
URL: http://www.opt.math.tu-graz.ac.atlipco99
) Workshop on Continuous Optimization
June 21-26, 1999, Rio de Janeiro.
URL: http://www.impa.br/~opt/
February 28, 1999: Deadline for submission of abstracts for contributed presentations
) Computational Mathematics Driven by Industrial Applications
June 21-27, 1999, Martina Franca, Apulia, Italy
URL: http://www.math.unifi.it/CIME/
) Fourth International Conference on Industrial and Applied Mathematics
July 5-9, 1999, Edinburgh, Scotland
URL: http://www.ma.hw.ac.ukliciam99
) First ASMO UK/ISSMO Conference on Engineering Design Optimization
July 8-9, 1999, Ilkley, West Yorkshire, UK
) 19th IFIP TC7 Conference on System Modeling and Optimization
July 12-16, 1999, Cambridge, England
URL: http://www.damtp.cam.ac.ukluser/naltc7con
January 31, 1999: Deadline for submitted papers
) Sixth International Conference on Parametric Optimization and Related Topics
October 4-8, 1999, Dubrovnik, Croatia
URL: http://www.math.hr/dubrovniklindex.htm

Final Report on the IMA CS/GAMM
International Symposium on Scientific
Computing, Computer Arithmetic and
Validated Numerics

- SCAN-98 Conference
Budapest, Hungary
September 22-25, 1998
The conference had more than 100 partic
ipants, and about 100 accepted talks from
21 countries. After some cancellations,
more than 70 talks were held, and addi
tionally nine highlighted, plenary talks.
These figures indicate a large participation,
which was partly caused by the attraction
of the organizing country, Hungary, but
the effective support system also con
tribute to the success. In the framework
of the latter, more than 20 participants
received some kind of financial support. It
is important that we could cover the par
ticipation fee of six young participants
(possibly their first conference participa
tion). The number of East European par
ticipants was relatively high. These results
are especially valuable, since in contrast to
the usual two year period, the current
meeting was organized just one year after
the last SCAN-xx conference. The scientif
ic level of the SCAN-98 symposium is
highlighted by the fact that 12 editors of
the main international journal of the field,
Reliable Computing, participated with
talks.
The organization of the conference was
supported by the Hungarian Scientific
Research Fund (OTKA), by the Hungarian
National Technology Development
Institute (OMFB), and by the Gesellschaft
fuer Angewandte Mathematik und
national and scientific support from the
international scientific organizations
IMACS and GAMM. The full program
and the volume of extended abstracts are
available, along with other information, on
the web site of the conference
(http://www.inf.u-szeged.hu/-scan98).
The submission of manuscripts and the
editorial tasks began after the meeting.
After the usual refereeing procedure, the
papers will appear in a special issue of
Reliable Computing and in an edited vol
Publishers. These publications are expected
to appear within one year.
DR. TIBOR CSENDES, HEAD OF THE
ORGANIZING COMMITTEE

10 P T I MA60

PAGE 4

i

DECEMBER 1998

MAPSP '99
Fourth Workshop on Models and Algorithms
for Planning and Scheduling Problems
Announcement and Call for Papers
Following three successful workshops (Lake
Como, Italy, in 1993; Wernigerode, Germany,
in 1995; and Cambridge, England, in 1997),
the Fourth Workshop on Models and
Algorithms for Planning and Scheduling
Problems is to be held in Renesse, The
Netherlands, June 14-18, 1999. The conference
hotel, De Zeeuwsche Stromen, is located in the
dunes of Renesse, a beach resort in the province
of Zeeland.
The workshop aims to provide a forum for sci
entific exchange and cooperation in the field of
planning, scheduling and related areas. To main
tain the informality of the previous workshops
and to encourage discussion and cooperation,
there will be a limit of 100 participants and a
single stream of presentations.
Contributions on any aspect of scheduling and
related fields are welcome.

Conference Organizers
Emile Aarts, Philips Research Laboratories,
Eindhoven; Han Hoogeveen, Eindhoven
University of Technology; Cor Hurkens,
Eindhoven University of Technology; Jan Karel
Lenstra, Eindhoven University of Technology;
Leen Stougie, Eindhoven University of
Technology; and Steef van de Velde, Erasmus
University, Rotterdam
Invited Speakers
Michel Goemans, CORE, Louvain-la-Neuve,
Belgium; Martin Grotschel, ZIB, Berlin,
Germany; Michael Pinedo, New York
University, New York, USA; Lex Schrijver, CWI,
Amsterdam, The Netherlands; Eric Taillard,
IDSIA, Lugano, Switzerland; Richard Weber,
Cambridge University, Cambridge, England;
Joel Wein, Polytechnic University, Brooklyn,
USA; and Gerhard Woeginger, Technische
Universitaet Graz, Austria
Preregistration
If you are interested in participating, please send
an e-mail to mapsp99@win.tue.nl. You will be
included in our e-mail list for further notifica
tions. Pre-registration does not bear any obliga
tions, but helps us to plan the schedule and keep

name, first name, affiliation, e-mail address, and
whether or not you intend to give a talk.
Presentations will be selected on the basis of a
one page abstract to be submitted no later than
March 1, 1999.
Important Dates
March 1, 1999 -Deadline for abstract submis
sion; April 1, 1999 -Last date of notification of
acceptance; May 1, 1999 -Last date for early reg
istration; and June 14-18, 1999 MAPSP'99.
Registration Costs include fee and accommoda
tion, based on double room occupancy. Prices
mentioned are tentative.
Early registration fee: NLG 800
Late registration fee: NLG 900
Supplement for single room: NLG 125
Beach party: to be announced
The deadline for early registration is May 1,
1999. To register, please consult the conference
web site.
Information Sources
For up-to-date information, consult the confer
ence web site
(http://www.win.tue.nl/-mapsp99).

NSF/CBMS Regional Conference in the Mathematical Sciences
Combinatorial Optimization: Packing and Covering
University of Kentucky Department of Mathematics; Lexington, Kentucky
May 24-28, 1999

This five-day conference, held at the University of Kentucky, is devoted to
the topic of packing and covering in combinatorial optimization. Detailed
information about the conference is available at the web site
(http://www.ms.uky.edu/-jlee/cbms.html). The main activity of this con
ference is a series of ten lectures by Dr. Gerard Cornuejols of Carnegie
Mellon University.
Principal Speaker:
Dr. Cornuejols is a leading researcher in the study of polyhedral and graph
theoretic methods for combinatorial optimization problems. He has made
some of the fundamental and difficult contributions to the study of bal
anced matrices, balanced 0,+1,-1 matrices, perfect 0,+1,-1 matrices, ideal
0,1 matrices, and balanced hypergraphs. He was co-winner of the
Lanchester Prize in 1977 (Operations Research Society of America). He has
held a CORE Fellowship (1981-82), a Von Humboldt Fellowship (1982),
a CNRS Fellowship (1985-86) and a DIMACS Fellowship (1993). Dr.
Cornuejols is the President-Elect of the Optimization Section of
INFORMS, the Editor of Mathematics of Operations Research and an
Associate Editor of Operations Research Letters.
Organizing Committee:
Kristina Vuskovic, Chair (University of Kentucky), Michael Jacobson
(University of Louisville), Andre Kezdy (University of Louisville), Carl Lee
(University of Kentucky), Jon Lee (University of Kentucky), Jeno Lehel
(University of Louisville)

em MA60

PAGE 5

DECEMBER 1998

6th Twente Workshop on Graphs
and Combinatorial Optimization

University of Twente

Enschede, The Netherlands

26 -28 May, 1999
The TWENTE WORKSHOP on
graphs and combinatorial optimiza
tion is organized biennially at the
Faculty of Mathematical Sciences at
the University of Twente. Topics are
graph theory and discrete algo
rithms (both deterministic and ran
dom) and their applications in
operations research and computer
science.
We try to keep a workshop atmos
phere as much as possible and, so
far, have succeeded in scheduling
no more than two presentations in
parallel. We also try to keep the
costs as low as possible in order to
make the workshop particularly
accessible to young researchers.
submit an extended abstract of

their representation, which will be
refereed by a programming com-
should be at least three but not
more than four pages and should
reach the organizers before March
12,1999.
The accepted extended abstracts
will be collected as a conference
volume to be available at the work
shop and to be published in a vol
ume of Electronical Notes in
Discrete Mathematics (ENDM).
The external program committee
members include: J. A. Bondy
(Lyon), R. E. Burkard (Graz), W. J.
Jackson (London), F. Maffioli
(Milano), R. H. Mohring (Berlin),
(Cologne), and C. Thomassen
(Copenhagen).
A normally refereed special issue of
Discrete Applied Mathematics will
be devoted to the proceedings of
the workshop.

If you are interested in participating
in the 6th Twente Workshop, please
pre-register now informally. Give
whether you would like to give a
include the topic if you know it
an official registration form and
more detailed information by
December 1998.
Further information on the work
shop will be available at the web
site
(http://www.math.utwente.nl/-tw6)

H.J. Broersma, U. Faigle,
C. Hoede, J.L. Hurink
Faculty of Mathematical Sciences
University of Twente
P.O. Box 217
7500 AE Enschede,
The Netherlands
e-mail: tw6@math.utwente.nl

em P T I MA60

PAGE 6

PAGE 7

Interior Point Techniques in Advances in Linear and Integer

Optimization." Complememtarity, Programming

Sensitivity and Algorithms Be
edited by J. Beasley

Benjamin Jansen Oxford University Press, New York,

ISBN 0 7923-4430-8 ISBN 0-19-853856-1

In this book, interior-point methods are used to
derive several new results in a variety of problems
in mathematical programming, e.g., in linear,
convex and semidefinite programming as well as
variational inequalities. It contains theoretical,
algorithmic and some computational results. The
basic concept used throughout the book is com-
plementarity, which measures the distance of a
solution to optimality.
One interesting result is deriving a way of per
forming sensitivity analysis for linear and quad
ratic programming problems using optimal part
tions which are provided by interior-point solu
tions. Another interesting analysis is that of
primal-dual Dikin-affine scaling algorithms.
These algorithms, introduced in the book, are
proven to outperform the classical primal-dual
affine scaling methods for linear programming in
both theory and practice. These algorithms are
studied for nonlinear problems as well.
The target-following approach studied for lin
ear programming offers a warm start as well as a
unifying and easy way to analyze primal-dual
interior-point methods for linear programming.
This approach has further been extended to con
vex programming as well as variational inequali
ties, enriching the theory of interior-point meth
ods for these areas and opening new problems.
The book is a very good reference for those
interested in the theoretical ill. ,. .. of interior
point methods and sensitivity analysis for linear
and nonlinear programming problems, and thus
is of interest to many researchers and practition
ers in optimization.
FARANAK SHARIFI MOKHTARIAN AND JEAN-LOUIS
GOFFIN

During the last fifty years, linear and integer pro
gramming have become quite important fields in
mathematics, computer science and operations
research, not only by their intrinsic interest but
also due to their many applications in several
areas of science, engineering and economics.
Simplex and interior point algorithms are consid
ered to be the most relevant techniques for solv
ing linear programs. The ill. .. ... of these algo
rithms depends on careful implementations that
exploit the sparsity and structure of the models to
be solved. Branch-and-bound algorithms have
become quite popular for finding global minima
of integer programs. These procedures require
efficient linear programming solvers and incorpo
rate cutting plane generators in order to compute
lower and upper bounds that reduce the overall
search for the optimum.
The first chapters of the book, edited by J.
Beasley, address many relevant features of sim
plex, interior point and branch-and-bound algo
rithms, while the last chapter is concerned with
the connections between computational logic and
integer programming. The editor has invited rec
ognized experts in these areas to write each one of
the seven chapters and this has produced an excel
lent book full of information about many relevant
issues on the computation of optima for linear
and integer programming, and for computational
logic.
In chapter 1, Maros and Mitra present an
interesting discussion of the most important fea
tures of an implementation of the simplex algo
rithm for the solution of large scale linear pro
grams, namely data structures, basis factorization
and updates, pricing, degeneracy and preprocess
ing. The integration of simplex and interior point
algorithms in a robust code and its use in a
branch-and-bound method also deserve special
attention. The authors still report some numerical
experiments with large scale linear programs to

00

DECEMBER 1998

highlight the performance of some simplex codes
that are available worldwide.
In chapter 2, Roos and Vial give an impressive
tutorial about the theoretical issues of interior
point algorithms. The authors start by describing
the theory of linear programming in the light of
the ideas of these methods. Then the so-called tar
get (path-following) algorithms are discussed with
special emphasis on their convergence and com-
plexity. The predictor-corrector and the infeasible
interior point algorithms also deserve a careful
treatment in this chapter.
Chapter 3 was written by Gondzio and Terlaky
and includes an enjoyable report on the impor
tant aspects of an implementation of interior
point algorithms for solving large scale linear pro
grams without special structure. Among many
relevant topics, the treatment of degeneracy and
ill-conditioning and the process for switching to a
simplex method deserve a special reading.
In chapter 4, Resende and Pardalos produce a
convincing explanation of how to implement
interior point algorithms for the solution of linear
network flow problems. The special structure of
these models requires iterative linear equation
solvers for finding search directions in these algo
rithms. The incorporation of preconditioners and
the design of special stopping criteria are manda
tory for these implementations and deserve a
careful treatment. Many numerical results are
included to illustrate the performance of these
techniques on the solution of network flow mod
els with a large number of nodes and arcs.
Recently there has been much interest in the
design of strong inequalities (cutting planes) that
are added to the constraints of an integer program
in order to get lower bounds for branch-and
bound algorithms. Lucena and Baisley present an
interesting discussion of this subject in chapter 5.
The implementation of such ideas employs col
umn and row generation, which are subjects
addressed by the authors in their article.
Preprocessing, the computation of upper bounds
and the node choice are also relevant issues in a
branch-and-bound implementation and deserve
full treatment. Numerical experiments with two
classes of structured integer programs are report
ed to highlight the 1i.. .. of these techniques
in practice.

The use of interior point algorithms in integer
programming is quite well analyzed by Mitchell
in chapter 6. The author starts by discussing the
so-called interior point cutting plane algorithm,
giving special attention to the early termination
and restarting for the interior point algorithm
and to the processes for adding and dropping
constraints and fixing variables. Then the incor
portion of an interior point method in a branch
and-bound algorithm is addressed. This chapter
terminates with some information about paral
lelization and other interior point approaches.
In the last chapter of this book, Williams and
Brailsford present a pleasant tutorial about com-
putational logic and its connection with integer
programming. The authors start by discussing the
representation of logic propositions as linear con
straints with zero-one variables. In the remaining
part of the chapter the algorithms for computa
tional logic are surveyed, together with their rela
tionships with cutting planes and branch-and
bound methods for integer programming.
In conclusion, J. Beasley and his guests have
done an excellent job in producing a high quality
comprehensive study of the most relevant tech
niques for the solution of linear and integer pro
gramming and computational logic. I strongly
recommend this book as a reference for
researchers and practitioners in these areas.
JOAQUIM JUDICE

Algorithms for Nonlinear

Programming and Multiple-

Objective Decisions

Ber; Rustem

J Wiley & Sons Ltd., Chichester,
1998

ISBN: 0-471-97850-7

This book addresses nonlinear optimal decision
problems for dynamic systems with multiple
objectives under uncertainty. Static nonlinear
problems are the basis of investigations. Multiple
objectives and uncertainty are tackled via quad
ratic programming, nonlinear programming,
nonlinear constrained min-max, mean-variance
optimization and non-cooperative Nash games.

Being the methodological pivot of the book,
nonlinear programming algorithms are presented
in detail, up to proofs of convergence rates. In
particular, this concerns active set and interior
point methods for quadratic programming, pro
programming algorithms involving augmented
Lagrangians, and Newton-type algorithms.
On the modeling side, the book places accent
on two particular approaches in multi-objective
optimization and in optimization under uncer
tainty. Regarding multiple objectives, the book
focuses on weighted least squares approximation
of target (or bliss) points and leaves out linear
models and discussions from the viewpoint of
Pareto optimality. Regarding uncertainty mean
variance, optimization has the main role, and
there is a chapter on worst case analysis via con
straint min-max problems. Scenario optimization
and its extensions to stochastic programming are
omitted from the text.
The book is written mainly for researchers in
computational methods for decision making and
optimal design, and computer scientists interest
ed in quantitative decision support. Its strong
points are in serving this community with a self
contained introduction into nonlinear program
ming tailored to needs for tackling multiple
objective decisions under uncertainty from the
specific viewpoint adopted in the book. Ample
The author also addresses people interested in
multiple-objective decisions in general. Here it
has to be admitted that the field of multi
objective (or vector) optimization is wider than
the sector selected by the author, and only scarce
references are given towards issues not covered by
the book.
For specialists in nonlinear programming the
book has its appeal mainly in the area of the pre
sented applications. The methodological part on
nonlinear programming algorithms, although
self-contained, has a supporting function rather
than the character of a comprehensive textbook
or research monograph.
RUDIGER SCHULTZ

em P T I MA60

PAGE 8

DECEMBER 1998

Bylaws and Prize Rules of The Mathematical Programming Society

The membership approved of amend-
ments to the MPS Constitution at the
business meeting in Lausanne. The revised
constitution was published in OPTIMA
No. 55.

In December 1998, a few changes of the
bylaws were approved of by the MPS
Council. Some of these changes were tech-
nical, some reflect recent practice, and the
Bylaw on Regional and Technical Sections
is new. For completeness, the revised
bylaws and prize rules are published here.

The Council would like to thank Jan Karel
Lenstra for his painstaking work on the
revision. Karen Aardal

Bylaws on Council Election and Committee
Membership

1 July 1979

1. The Council will consist of the four members
receiving the most votes, subject to the proviso
that at most two members are from a single
country, as determined by the individual's per
manent residence.
2. In the case of committees joint with other
Societies, where it would be inappropriate for
the Chairmen of the Society and of the
Executive Committee to be ex-officio members,
such membership will be waived. A designated
committee member representing MPS will be
responsible for keeping the Executive
Committee informed of the committee's
progress, accomplishments, and decisions.

Guidelines for Proposals to Organize
International Symposia on Mathematical
Programming

Revision, 1998

Approximately five years prior to each of the
International Symposia on Mathematical
Programming, interested parties are invited to
submit proposals to host the symposium.
Guidelines and associated background informa
tion are given below for those who wish to offer
such proposals. The material is in four parts:
1. Traditions under which the symposia are
held.
2. Provisions of the Mathematical
Programming Society Constitution.
3. Recommendations and requests of the

Council of the Society.
4. Financial arrangements.
The traditions of these symposia extend unbro
ken from 1951. They have been held since then
at two to four year intervals. Since 1964, they
have regularly been three years apart and, with a
single exception, every second meeting has been
held in North America. They have provided a
comprehensive forum for presentation of
research results in the mathematics of mathe
matical programming, in algorithms and com-
putation, and in modeling. Through 1970, they
were intermittently organized when the time
seemed ripe by leading members of the mathe
matical programming research community.
During 1971-72, the Mathematical
Programming Society was established, in large
measure in order to insure continuation of the
symposia by providing for the carry-over of
funds and procedures from each symposium to
the next. There was general agreement at that
time that the Society should maintain the
objectives and procedures for holding the sym
posia.
In 1988 the Council decided that there will
be a separate Symposium Advisory Committee
for every symposium. Six years prior to the sym
posium in question, the Symposium Advisory
Committee is appointed, and its chair designat
ed, by the Chairman of the Society, subject to
Council approval. The Chairman of the Society
and the Chairman of the Executive Committee
are ex officio members of the committee.
During the first three years, the committee pre
pares the selection of the symposium site by
Council. For this purpose it solicits proposals by
publishing a call for proposals in Optima (the
Society newsletter) and by any other appropriate
means, and it visits possible sites. During the
second period of three years, the committee is
the official link between the Society and the
Organizing Committee, and it advises the
Organizing Committee on all relevant issues.
About three years prior to the symposium, the
Council of the Mathematical Programming
Society selects a place and time (plus or minus at
most a few weeks) for the next symposium, tak
ing into account the recommendation of the
Symposium Advisory Committee. The main cri

teria for selection of the location are:
1. Existence of mathematical programming
researchers in that geographic area who are
interested in organizing the symposium.
2. Attendance open to prospective partici
pants from all nations.
3. Availability of an attractive facility with a
sufficient number of meeting rooms, stan
dard lecture equipment, etc.
4. Availability of a sufficient supply of reason
ably economical hotel and/or university
dormitory rooms fairly near the meeting
facility.
Concurrently with the selection of the site,
the Chairman of the Mathematical
Programming Society, in consultation with the
Chairman of the Executive Committee and the
Symposium Advisory Committee, and subject to
Council approval, selects a Chairman or Co
Chairmen of the Local Organizing Committee
for the symposium. The main criteria for selec
tion of the latter are that they be respected
mathematical programming researchers and that
they have energy and enthusiasm for the task.
After his appointment, the Chairman of the
Organizing Committee forms the Organizing
Committee, drawing largely or entirely on math
ematical programmers who live in the area in
which the symposium will be held.
Subsequently, the Chairman of the Society, in
consultation with the Chairman of the
Organizing Committee and the Symposium
mathematical programming to be Chairman of
the Program Committee. The Organizing
Committee, in consultation with the Chairman
of the Program Committee and the Symposium
Committee, which should comprise quite a
number of prominent mathematical program
ming researchers, from all parts of the world.
The Program Committee has only an advisory
role. It is available to the Organizing Committee
as a sounding board and a source of suggestions
concerning the technical program of the sympo
sium, it should be invited by the Organizing
Committee to submit suggestions about the
choice of plenary and invited speakers.
Limited only by a few broad guidelines, the
Organizing Committee has almost complete
freedom in planning the technical program and
other arrangements. In particular:

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DECEMBER 1998

1. It solicits invited and contributed papers,
and formulates the technical program.
There will be parallel sessions and plenary
sessions. As far as possible the speakers at
the plenary sessions should be chosen to
represent different parts of the world as
well as different aspects of mathematical
programming. It should be noted that, tra
ditionally, the symposia have endeavored to
give everyone who wishes to speak a chance
to be heard, rejecting papers only on the
grounds that their subject matter lies
entirely outside the field or presents clearly
incorrect results.
2. It takes responsibility for soliciting funds
from appropriate institutions for use in
ways which are intended to enhance the
value of the symposium; for example, travel
assistance funds for important contributors
who would not otherwise be able to attend.
3. It contracts for meeting rooms and living
accommodations, and plans social events
such as a cocktail party and banquet.
4. To whatever extent it deems desirable, it
invites societies and institutions other than
the Mathematical Programming Society to
2. Provisions of the Constitution of the Society
Section V of the Constitution of the Society is
called "International Symposia." It stipulates:
1. International Symposia are sponsored by
the Society at intervals of between 24 and
48 months. The Chairman of the Society
nominates and the Council elects the
Chairman for the organization of the next
International Symposium.
2. Fees for the International Symposium are
fixed by the local organizing committee, in
consultation with the Chairman of the
Society. The Council shall adopt guidelines
regarding the financial obligations between
the Society and the organizing committee.
It is appropriate to note also that several para
graphs of the Constitution's Section IV
(which is called "Council") relate to
International Symposia:
in 3: The Chairman of the Society will chair a
business meeting on the occasion of any
International Symposium held during his
term of office.
in 5: The Treasurer shall make a financial
report to the Society at the International
Symposium held within his term of office.
in 7: At each International Symposium there
will be a meeting of the outgoing Council
and of the incoming Council. These meet

ings may be combined at the discretion of
the Chairman.
3. Recommendations and requests of the
Council
1. A plenary session should be scheduled for the
presentation of prizes.
2. No distinction whatsoever should be made
between members and nonmembers of the
Society in forming the Organizing Committee
and the Program Committee, nor in selecting
plenary, invited and contributed papers. In
order, however, to maintain the Society, the sym
posium organizers should:
(a) Set a modestly lower registration fee for
members of the Society than for nonmem
bers.
(b) Make provisions for nonmembers to join
the Society as part of advance registration
for the symposium by mail, or during regis
tration in person at the symposium.
Nonmembers who join the Society should
pay the reduced registration fee.
(c) Schedule and publicize a business meeting
of the Society, as called by the
Constitution.
(d) Provide a room for use of the Council
throughout the symposium.
3. The Organizing Committee should:
(a) Provide an adequate forum for the report
ing of the activities of Committees of the
Society.
(b) Seek the agreement of the Editors-in
Chief and the Council concerning any
publication of symposium papers.
(c) Get the approval by the Council for any
(d) No activities which give the appearance
that the Society is passing judgment on the
relative merits of commercial products or
services shall be organized without formal
approval by the Council.
4. Financial arrangements
The Society can provide seed money to the
Organizing Committee. It is expected, however,
that the Committee will attempt to cover all
expenses through registration fees, grants and
institutional support; hence, that after the sym
posium, the seed money will be returned to the
Society.
The Organizing Committee should develop a
budget which covers all anticipated income and
expenses. The Chairman and the Treasurer of
the Society should have access and an opportu
nity to comment on the proposed budget. At

the end of the symposium, the Organizing
Committee should provide the Treasurer of the
Society with a financial report.
In case there is any surplus of symposium
funds, at least half of it will become part of the
funds of the Society. The Organizing Committee
may make a proposal to the Council for using
the remaining surplus on activities that will ben
efit the international mathematical programming
community. At the request of the Organizing
Committee and subject to approval of the budg
et by the Chairman and the Treasurer of the
Society, the Council will provide a guarantee of
at most \$15,000 against losses of the sympo
sium. Agreements will be made in writing prior
to the symposium.

Bylaw on IPCO Conferences

Revision, 1998

1. The Society sponsors a series of Conferences
on Integer Programming and Combinatorial
Optimization (IPCO Conferences) as well as a
series of proceedings of these conferences. The
program of an IPCO Conference consists of pre
sentations of original work dealing with theoreti
cal, algorithmic, computational and practical
aspects of integer programming and combinator
ial optimization. The proceedings contain the
full text of the presentations and are available at
the beginning of the conference.
2. An IPCO Conference will be held in two out
of every three years, namely, in every year in
which no International Symposium on
Mathematical Programming takes place.
3. The Council selects the location of an IPCO
Conference and appoints the Chairman of the
Program Committee and the Chairman of the
Organizing Committee, on the basis of propos
als by the Executive Committee. Each of these
chairmen forms his own committee, subject to
approval by the Chairman of the Society. In
order to guarantee good communication
between the two committees, the chairman of
each is a member of the other.
4. The locations of the IPCO Conferences are
preferably chosen in such a way that, if the
international symposia are also taken into
account, an alternation between North America
and Europe is achieved. This is a guideline, not
an iron-clad rule. In particular, it does not
exclude the selection of a location on another

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PAGE 10

DECEMBER 1998

continent for any meeting.
5. The task of the Program Committee is to
solicit extended abstracts of possible present
tions, to select the presentations on the basis of
the extended abstracts, and to collect the full
papers for publication in the proceedings. In the
call for papers, the Program Committee empha
sizes the breadth of the subject matter of the
conference and specifies the nature of an extend
ed abstract. The Program Committee will meet,
in order to discuss the submissions and to select
the papers.
6. The Organizing Committee is responsible for
the local and financial organization of the con
ference, for the collection of the camera-ready
copy of the proceedings, and for its timely deliv
ery at the publisher. The budget of an IPCO
Conference includes the costs of the meeting of
the Program Committee and of one copy of the
proceedings for every registered participant.
7. The Publications Committee of the Society is
responsible for the publication of the proceed
ings. If the publisher of the proceedings is other
than the Society, then the Publications
Committee should try to reach a long-term
agreement with that publisher.

Bylaw on Publications

4 January 1994

1. The Society publishes journals and newslet
ters to inform members and others about cur
rent events and new developments in the field of
mathematical programming, and to contribute
to public understanding of that field. The public
cations program of the Society is under the gen
eral authority of the Council, which may estab
lish new Society publications and/or discontinue
existing ones. All funds deriving from public
tions of the Society are the property of the
Society.
2. Operational responsibility for the publications
program is vested in the Publications
Committee, which operates under the guidance
of, and reports to, the Council. The Publications
Committee is appointed, and its chair designat
ed, by the Chairman of the Society with the
approval of the Council. Specific responsibilities
of the Publications Committee include, but are
not limited to, the following:

(a) Making recommendations to the Council
(b) Overseeing all operational publications
matters including the editorial operations,
costs, quality, timeliness, pricing, distribu
tion, advertising, and circulation of all pub
locations.
(c) Supervising the editors of the publications,
to include initiation of review and search
processes when required, and recommend
tion of editorial candidates.
(d) Representing the Council to the publisher
of the publication, if that publisher is other
than the Society.
3. To manage individual publications, editors are
appointed by the Chairman with the approval of
Council. The Council may authorize suitable
honoraria for editors. Specific responsibilities of
editors include, but are not limited to:
(a) Managing the operations of their public
tions, including in particular the areas
identified in 2(b) above, in compliance
with policy and budget guidance given by
the Council and the Publications
Committee. As part of the management
process, editors may set up and administer
editorial funds using monies provided by
the Society. Such monies remain the prop
erty of the Society.
(b) Appointing editorial staff (e.g., associate
editors) as needed.
(c) Reporting at least annually to the Council,
through the Publications Committee, on
the operations and financial status of their
publications.
4. Under normal circumstances the term of
appointment of an editor will be three years.
Editors may serve more than one term.
5. When an editor's term approaches its end, or
when required by other circumstances, the
Publications Committee will charge a committee
to review the state of that editor's publication.
The review committee's report will include the
recommendation of a person to serve as editor
during the next term.

Bylaw on Society Prizes

Revision, 1998

Awarding the prizes
1. All prize winners shall be informed of their
selection, and must indicate acceptance within a
reasonable time.

2. The prize will normally be awarded in a cere
mony at a Society meeting. If a recipient does
not attend the award ceremony, the Society will
send the award via registered mail to any address
designated by the awardee.
3. In the absence of an acceptance or appropri
ate mailing instructions from an awardee within
a reasonable time, all material parts of the award
shall be deemed to be forfeited and revert to the
Society.
4. In the event of such a forfeiture the awardee
will be listed as a prize winner in any subsequent
published listing of prizes, unless the Society has
been i .. .II. .11 requested not to do so by the
awardee.
5. If an awardee seeks at some future time to
claim a forfeited award, approval of the Council
of the Society will be required.
The above permits a prize to be awarded even
if the recipient was never heard from. This is felt
to be unavoidable if only merit is used as a crite
rion. Also it is possible that there is insufficient
time between notification of the awardee and
the award ceremony to permit contact.
Supporting the prizes
In case the fund of any of the prizes sponsored
or cosponsored by the Society is depleted, the
Society will consider supporting the prizes out
of its own resources.

Bylaw on Regional and Technical Sections

17 November 1998

Regional sections
Regional sections can be established in any
region, be it a country, a part of a country, or a
collection of countries.
Any group of at least six MPS members from
the region in question can propose the establish
ment of a regional section. All MPS members in
the region automatically become members of the
regional section. A region needs at least 15 MPS
members to have a regional section. Each
regional section must be approved by the
Council.
Regional sections can organize themselves as
they wish. Each section must have a leader, who
must be approved by the Council. When a
regional section is established, the proposers
must suggest an initial leader. When the Council
also suggest the length of the term. It is the duty

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DECEMBER 1998

suggested before his or her own term ends.
The name of a regional section is "The
Mathematical Programming
Society -... Section." The regional leader has
the right to use the title "Leader of the
... Section of the Mathematical Programming
Society," the MPS letterhead, with the name of
the section clearly visible, and the name of MPS.
Any use of the name has to be reported to, but
not approved by, the Council.
Regional sections are financially independent
of MPS, and do not collect fees. The Council
can give loans or hand money to regional sec
tions.
Technical sections
Technical sections can be established in any area
of mathematical programming, be it theoretical,
computational, or applied.
Any group of at least 15 MPS members can
propose the establishment of a technical section.
Membership is voluntary. Each technical section
must be approved by the Council.
Technical sections can organize themselves as
they wish. Each section must have a committee
and a leader, both approved by the Council.
When a technical section is established, the pro
posers must suggest an initial committee and
leader, and a term. It is the duty of the leader to
make sure that a new leader is suggested before
his or her own term ends.
Technical sections are financially independent
of MPS, and can collect fees. The Council can
give loans or hand money to technical sections.

Financial Guidelines

Revision, 1998

1. Activities to be supported
The financial resources of the Mathematical
Programming Society are to be used for the fol
lowing purposes: (a) secretariat services; (b) pub
locations of the Society; (c) support of the
International Symposia on Mathematical
Programming; (d) support of conferences, sym
posia, congresses, etc.; (e) support of the prizes
of the Society; (f) support of the regional and
technical sections; (g) honoraria; (h) necessary
expenses of the Society's officers and approved
committees; (i) travel necessary for the conduct
of the business of the Society.

2. Treasurer's responsibilities
1. The treasurer shall have the responsibility
for the custody of all funds of the Society,
and shall cause to be disbursed such funds
of the Society as may be ordered by the
Council, or as may be ordered by other
officers of the Society within their authority
as granted by the Council.
2. The treasurer will maintain or create such
checking or other accounts as required for
the transaction of Society business, with
himself, the Chairman of the Society, the
Chairman of the Executive Committee,
and such other officers as the Council may
designate as alternative signatories. He may
also authorize the maintenance or creation
of other accounts as required, such as for
the use of the Editor-in-Chief, with appro
private alternative signatories.
3. Before January 1, or other date set by the
Executive Committee, of each year the
Treasurer shall prepare a budget following
the policies approved by the Council. This
budget shall include, but need not be limit
ed to, editorial expenses and expenses of
the various committees and officers of the
Society. This budget shall be submitted to
the Council for approval via the Executive
Committee.
4. Accompanying the budget will be a state
ment of all the Society's accounts and an
analysis, based on the best information
available, of the present state of the
Society's finances and its prospects for the
coming year.
5. On or about August 1 of each year the
Treasurer will transmit to the Executive
Committee a dues recommendation for the
following year and an updated version of
the year's budget and the analysis above.
3. Unbudgeted expenditures
1. The Council empowers the Executive
Committee to authorize the expenditure of
funds, in excess of the budgeted amounts,
up to 5% of the total budget per year and
\$500 for a single item, for purposes set
forth in Section 1. Expenditures in excess
of these limits which have not been previ
ously budgeted require Council approval.
2. The Chairman of the Society and the
Chairman of the Executive Committee are
empowered to authorize the expenditure of
petty cash funds" not to exceed a total of
\$200 per year for each. These funds shall
be used for specific goods and services of
small and temporary value.

Fulkerson Prize

Revision, 1995

The Fulkerson Prize for outstanding papers in
the area of discrete mathematics is sponsored
jointly by the Mathematical Programming
Society and the American Mathematical Society.
Beginning in 1979, up to three awards of \$750
each will be presented at each (triennial)
International Congress of the Mathematical
Programming Society; they will be paid out of a
memorial fund administered by the American
Mathematical Society that was established by
friends of the late Delbert Ray Fulkerson to
encourage mathematical excellence in the fields
of research exemplified by his work. Beginning
in 1994, the amount of each award is \$1,500.
Papers to be eligible should form the final
publication of the main results) and should
have been published in a recognized journal, or
in a comparable, well refereed volume intended
to publish final publications only, during the six
calendar years preceding the year of the
Congress. Extended abstracts and prepublica
tions, and articles published in journals, journal
sections or proceedings that are intended to pub
lish non final papers, are not included. The
extended period of six years is in recognition of
the fact that the value of fundamental work can
not always be immediately assessed. The prizes
will be given for single papers, not series of
papers or books, and in the event of joint
authorship the prize will be divided.
The term "discrete mathematics" is intended
to include graph theory, networks, mathematical
programming, applied combinatorics, and relat
ed subjects. While research work in these areas is
usually not far removed from practical applica
tions, the judging of papers will be based on
their mathematical quality and .,.l.., ..
The Selection Committee for the awards will
have two members appointed by the Chairman
of the Mathematical Programming Society and
one member appointed by the President of the
American Mathematical Society. The committee
members will serve for at most two rounds of
awards, with terms overlapping where possible
for the sake of continuity. One of the initial
MPS appointees will be the first chairman of the
committee; subsequent chairmen should when
ever possible be veterans of the previous round
of awards. The Selection Committee will devise

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DECEMBER 1998

its own procedures for acquiring nominations or
otherwise searching out papers of interest, taking
pains, however, not to overlook the work of
young, relatively unknown mathematicians.

George B. Dantzig Prize

Revision, 1988

Guidelines
The prize is awarded jointly by the
Mathematical Programming Society (MPS) and
the Society for Industrial and Applied
Mathematics (SIAM). The prize is awarded for
original research, which by its originality,
breadth and depth, is having a major impact on
the field of mathematical programming. The
contributions) for which the award is made
must be publicly available and may belong to
any aspect of mathematical programming in its
broadest sense. Strong preference will be given to
candidates that have not reached their 50th
birthday in the year of the award.
The Prize Committee
There will be an ad hoc Prize Committee
appointed for each award jointly by the
Chairman of MPS and the President of SIAM.
The committee will consist of four members,
one designated "Chairman" by the Chairman of
MPS, and it will represent a diversified view of
mathematical programming. Committee
appointments should be made at least two years
before the prize award date. The MPS has the
responsibility to notify its Chairman and the
President of SIAM to make the appointments.
For continuity, committee members will nor
mally serve on two successive prize committees
with the committee chairman being a second
term member. Thus two new members will be
appointed and two members will be reappointed
every three years. Committee members will be
members of MPS and/or SIAM. At least two
members of the committee will be MPS mem-
bers and at least two will be members of SIAM.
The membership of the committee should also
reflect the international character of the societies.
Committee procedure
The committee is responsible for the solicitation
and evaluation of nominations. A call for nomi-
nations should be placed in appropriate SIAM,
MPS, and other publications. Nominations
should be accompanied by a letter of recommend
nation. The full committee should meet at least

once, early enough to permit extended discus
sions regarding the qualifications of the candi
dates.
The committee will deliver its final report
with its nominees) at least six months prior to
the prize award date. The committee will com-
plete its duties with the awarding of the prize. If
the committee reports that no prize can be
awarded, then the prize money will be used to
increase the endowment and the duties of the
committee will be completed.
The nominations) for the award should be
presented by the Prize Committee to the
Executive Committees of the SIAM Council and
of MPS, via the President of SIAM and the
Chairman of MPS. The nominations) for the
award must be accompanied by a written justifi
cation and a citation of about 100 words that
can be read at the award date.
Both SIAM and MPS must accept the nomi
nationss. Objection by either one of the two
societies will nullify the nominationss. If the
nominations) of the Prize Committee is rejected
by MPS and/or SIAM, the Prize Committee
may propose a second nomination.
Prize award date
A prize award will be considered every three
years. If no prize is awarded, the award date
The prize fund
MPS has the responsibility for soliciting and
providing the funds necessary for the prize
award. The fund will come from a contributed
endowment. These funds are to be sent directly
to SIAM, to be contributed to the George B.
Dantzig Prize Fund in care of SIAM. SIAM has
the responsibility for managing and administer
ing the prize fund.
Description of the award
The award is to include a certificate containing
the citation and a cash prize, the amount of
which is to be determined by the Executive
Committee of the SIAM Board and of MPS.
Normally the amount of the prize will be
approximately the available proceeds from the
endowment minus travel expenses from the
endowment as noted below. Travel expenses for
the award recipients) to the meeting will nor
mally be paid by the George B. Dantzig Prize
Fund, or as necessary, out of the operating funds
of the Society that hosts the award. It is the
option of the hosting organization to make the

payment of travel expenses contingent on the
delivery of a major lecture at the meeting.
The award presentation
The award will be presented at the International
Symposium of MPS except every third time it
will take place at a national meeting of SIAM,
either the National (spring) or fall meeting of
SIAM in the year of the award. Presentation will
be made by the Chairman of MPS (or his desig
nate) when MPS is hosting the award, or other
wise by the President of SIAM (or his designate).
The recipient is expected to make a short accept
ance speech.
Change to these specifications
Any changes to these specifications must have
the approval of MPS and the SIAM Council and
Board of Trustees.

Beale-Orchard-Hays Prize for
Excellence in Computational
Mathematical Programming

Purpose
To be eligible a paper or a book must meet the
following requirements:
1. It must be on computational mathematical
programming. The topics to be considered
include:
(a) experimental evaluations of one or more
mathematical programming algorithms,
(b) the development of quality mathematical
programming software (i.e., well-docu
mented code capable of obtaining solutions
to some important class of mathematical
programming problems) coupled with doc
umentation of the application of the soft
ware to this class of problems (note: the
award would be presented for the paper
that describes this work and not for the
software itself),
(c) the development of a new computational
method that improves the state-of-the-art
in computer implementations of mathe
matical programming algorithms coupled
with documentation of the experiment that
showed the improvement, or
(d) the development of new methods for
empirical testing of mathematical program
ming techniques (e.g., development of a
new design for computational experiments,
identification of new performance meas
ures, methods for reducing the cost of
empirical testing).
2. It must have appeared in the open literature.
3. Documentation must be written in a language

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DECEMBER 1998

acceptable to the Screening Committee.
4. It must have been published during the three
calendar years preceding the year in which the
prize is awarded.
These requirements are intended as guidelines
to the Screening Committee but are not to be
viewed as binding when work of exceptional
merit comes close to satisfying them.
Frequency and amount of the award
The prize will be awarded every three years. The
award will be presented at the awards session of
the International Symposium on Mathematical
Programming Society. The prize consists of
\$1,500 and a plaque.
Judgement criteria
Nominations will be judged on the following
criteria:
1. Magnitude of the contribution to the
mathematical programming.
2. Originality of ideas and methods.
3. Degree to which unification or simplification
of existing methodologies is achieved.
4. Clarity and excellence of exposition.
The Awards Committee
The screening process will be carried out by a
committee of four to eight people appointed by
the Chairman of MPS. The appointment of the
committee must be made at least one year prior
to the awarding of the prize.
Each committee member will read all nomi
nations and provide to the Chairman of the
committee his or her assessment based on the
four criteria noted above. The Screening
Committee reserves the right to determine that
there will be no prize given for that meeting.
Nominations
Nominations must be in writing and include the
titles) of the papers) or book, the authorss, the
place and date of publication, and four copies of
the material. Supporting justification and any
supplementary materials are welcome but not
mandatory. All nominations must be received at
least six months prior to the awards date. The
Screening Committee reserves the right to
request further supporting materials from the
nominees.

A. W Tucker Prize

The A.W. Tucker Prize will be presented at each
International Symposium of the Society for an
outstanding paper authored by a student. All
Nominations of students who have not yet
received the first university degree are especially
welcome. In advance of the symposium an
Awards Committee will screen the nominations
and select at most three finalists. The finalists
will be invited, but not required, to give oral
presentations at a special session of the sympo
sium. The Awards Committee will select the
winner and present the award prior to the con
clusion of the symposium.
Eligibility
The paper may concern any aspect of mathemat
ical programming; it may be original research,
an exposition or survey, a report on computer
routines and computing experiments, or a pres
entation of a new and ingenious application.
The paper must be solely authored, and com-
pleted since the beginning of the calendar year
in which the preceding symposium was held.
The paper and the work on which it is based
should have been undertaken and completed in
conjunction with a degree program.
Nominations
Nominations must be made in writing to the
Chairman of the Awards Committee by a faculty
member at the institution where the nominee
was studying for a degree when the paper was
completed. Letters of nomination must be
accompanied by four copies each of: the stu
dent's paper; a separate summary of the paper's
contributions, written by the nominee, and no
more than two pages in length; and a brief biog
raphical sketch of the nominee. The Awards
Nominations and the accompanying document
station are due six months prior to the beginning
of the symposium, and must be written in a lan
guage acceptable to the Awards Committee.
Selection
The Awards Committee will select the finalists at
least three months prior to the beginning of the
symposium. It will notify the Chairman of the
Society and the Chairman of the Executive
Committee at that time. The winner will be

selected by the Awards Committee at the sympo
sium, subsequent to the oral presentations by the
finalists. Selection will be based on the signifi
chance of the contribution, the skillfulness of the
development, and the quality of the exposition.
Endowment
The Society will solicit contributions to an
endowment for the prize.
Disbursements from the endowment income
The winner will receive an award of \$750 (U.S.)
and a certificate. The other finalists will also
receive certificates. The Society will also pay par
tial travel expenses for each finalist to attend the
symposium. These reimbursements will be limit
ed in accordance with the amount of endow
ment income available. A limit in the range
from \$500 to \$750 (U.S.) is likely. The institu
tions from which the nominations originate will
be encouraged to assist any nominee selected as
a finalist with additional travel expense reim
bursement.
Awards Committee
The Awards Committee will have five members,
including a chairman, all appointed by the
Chairman of the Society. The members will
serve staggered terms covering two successive
symposia, with two or three members retiring
after each symposium.

em P T I MA60

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PAGE 15

I o teelcroi vrio f PI MA, please&see:

http://www.ise.ufl.edul-optimal

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O P T I M A

MATHEMATICAL PROGRAMMING SOCIETY

S. UNIVERSITY OF

* FLORIDA

Center for Applied Optimization
371 Weil
PO Box 116595
Gainesville FL 32611-6595 USA

FIRST CLASS MAIL

EDITOR:
Karen Aardal
Department of Computer Science
Utrecht University
PO Box 80089
3508 TB Utrecht
The Netherlands
e-mail: aardal@cs.ruu.nl
URL: http://www.cs.ruu.nl/staff/aardal.html

AREA EDITOR, CONTINUOUS OPTIMIZATION:
Mary Beth Hribar
Tera Computer Company
2815 Eastlake Ave. E.
Seattle, WA 98102
USA
e-mail: marybeth@tera.com

AREA EDITOR, DISCRETE OPTIMIZATION:
Sebastian Ceria
417 Uris Hall
Columbia University
New York, NY 10027-7004
USA
e-mail: sebas@cumparsita.gsb.columbia.edu
URL: http://www.columbia.edu/-sc244/

BOOK REVIEW EDITOR:
Robert Weismantel
Universitat Magdeburg
Fakultat fur Mathematik
Universitatsplatz 2
D-39106 Magdeburg
Germany
e-mail: weismant@math.uni-magdeburg.de

Donald W Hearn, FOUNDING EDITOR
Elsa Drake, DESIGNER