NA Digest Monday, August 7, 1995 Volume 95 : Issue 31

Today's Editor:
Cleve Moler
The MathWorks, Inc.

Submissions for NA Digest:

Mail to

Information about NA-NET:

Mail to

URL for the World Wide Web: -------------------------------------------------------

From: Joachim Luegger <luegger@ZIB-Berlin.DE>
Date: Mon, 18 Sep 1995 07:56:45 +0200
Subject: Math-Net Links to the Mathematical World

I am glad to announce a new - yet experimental - WWW information service for
Mathematics, the

Math-Net Links to the Mathematical World

The Math-Net Links are a first collection of about 700 mathematical resources
and related pointers into the Internet consisting of

o Math-Web, the core collection - ordered by subject - of pointers
to the mathematics information resources, including the field of
Scientific Computing,
o Math-Net, a collection - ordered by locations and names - of links
to mathematical institutions, centers and larger research
projects, at present most of them from Germany,
o The Mathematical Museum and Expositions, an extension of the
Math-Web into History, Art and Natural Sciences, with a couple of
exits to related virtual museums and exhibitions,
o Electronic Publishing, a collection reflecting discussions on
electronic publishing in mathematics, and also various pointers to
activities and projects related to the more general Digital
Libraries thema, and of
o Internet Resources, containing some pointers to specific Internet
archives which may be of value for the mathematical Internaut.

The Math-Net Links belong to the first steps of the "Konrad-Zuse-Zentrum fuer
Informationstechnik Berlin" (ZIB) towards a "Distributed Information System for
Mathematics", a project planned by the "Deutsche Mathematiker-Vereinigung"
(DMV) for the years from 1996 to 1998.

We will integrate the Math-Net Links into the server of the International
Mathematical Union (IMU) which is being build up at present by ZIB. You
may find the related URLs in the homepage of the Math-Net Links.

Naturally, we hope for suggestions, comments, and also critizism from you in
order to maintain this service in the long run, and to keep it up-to-date.
An activity of this kind lives from world wide contributions. We hope that
you have an idea how to improve this service.

Best regards,
Joachim Luegger


From: Alexander Puhov <>
Date: Mon, 18 Sep 1995 11:18:10 +0200 (MET DST)
Subject: Seeking Simple Graphics Library for X-windows

Dear Collegues,

I am making scientific simulations and need some simple graphics library
for display of the results in X-windows system. The subroutines should be
higher-level in comparison with Xlib and Motif and be able to:

1. Open a window for graphics (probably using Motif).
2. Plot in the window a pixel, line, and filled polygon in an arbitrary color.
3. (Optional) Plot an axis.

I shall be grateful, if somebody knows any place where to find such a


Alexander Puhov, E-mail:


From: Fred Hickernell <>
Date: Tue, 19 Sep 1995 16:23:38 +0800 (EAT)
Subject: Front-ends for Numerical Simulation Packages

My MSc student is developing a graphical front-end for numerical
simulations that is intended to be general in nature (that is, not
application specific). This front-end will track the simulation so that
the user can take corrective actions (modify parameters or terminate) as
necessary. The simulation might be the solution of a large system of
ODEs or PDEs, a large optimization problem, etc. The intended platform is
UNIX. Is anyone aware of similar work that has been done and can point us
to some references?


Fred J. Hickernell Email:
Department of Mathematics Office: (852) 2339-7015
Hong Kong Baptist University Fax: (852) 2336-1505
Kowloon Tong, HONG KONG Home: (852) 2609-1816


From: Sabine Van Huffel <>
Date: Thu, 21 Sep 1995 14:42:02 +0200
Subject: Errata List of TLS Book by S. Van Huffel and J. Vandewalle

Now that our book is being reprinted, I would like to tell you that a list of
errata for the first print of our book:

The Total Least Squares Problem: Computational Aspects and Analysis
Sabine Van Huffel and Joos Vandewalle
SIAM, Philadelphia, 1991

is available by anonymous ftp. Just ftp,
cd pub/SISTA/vanhuffel, and get

Sabine Van Huffel


From: Sabine Van Huffel <>
Date: Thu, 21 Sep 1995 14:09:15 +0200
Subject: Workshop on Total Least Squares

2nd International Workshop on
August 21--24, 1996
Leuven, Belgium
Announcement and Call for Papers

This interdisciplinary workshop is a continuation of a previous workshop
on ``Total Least Squares: Concepts, Algorithms, Applications'' which was
held in Leuven, Belgium, August 1991, and aims to bring together numerical
analysts, statisticians, engineers, economists, chemists, etc. in order to
discuss recent advances in Total Least Squares (TLS) techniques and
errors-in-variables modeling.

Papers are solicited for technical sessions on the following and related
TLS Concepts and Properties: structured and constrained TLS, other norms,
nonlinear errors-in-variables, curve fitting, statistical, numerical,
robustness and optimization aspects
TLS Algorithms: real-time, adaptive, recursive, iterative algorithms, based
on SVD or related decompositions, architectures, complexity, accuracy,
regularization, convergence
TLS Applications: array signal processing, model identification, spectrum
analysis, harmonic retrieval, direction finding, geology, chemistry
In particular, overview papers describing recent advances on any of the
above-mentioned topics are invited. Other topics related to TLS,
errors-in-variables modeling, and their applications are also welcome.

Authors are invited to submit four copies of an extended summary (2--4 pages)
to the workshop secretariat for review. Fax number and email should be
provided if possible. Overview papers will be presented as lecture, the
other ones in poster form. Authors of accepted contributions will be asked
to prepare a version for publication in the conference proceedings.

Submission of summary: February 15, 1996
Notification of Acceptance: April 1, 1996
Submission of camera-ready paper: July 1, 1996

Conference committee: Sabine Van Huffel (chairperson), Bart De Moor, Wayne
Fuller, Leon Gleser, Gene Golub, Bjorn Ottersten, Pete Stewart

Workshop secretariat: Ida Tassens <>
Dept. of Electrical Engineering, ESAT/SISTA,
Katholieke Universiteit Leuven,
Kardinaal Mercierlaan 94, B-3001 Leuven-Heverlee, Belgium
tel : 32/16/32.17.09 fax : 32/16/32.19.86


From: Raymond Chan <>
Date: Wed, 20 Sep 1995 09:24:16 +0800 (EAT)
Subject: Winter School on Iterative Methods in Hong Kong

Winter School on Iterative Methods in
Scientific Computing and Their Applications

Second Announcement

Host by:
The Institute of Mathematical Sciences
The Chinese University of Hong Kong, Hong Kong
December 14-20, 1995

Main Invited Lecturers and Sample Topics:

Tony Chan (UCLA): Domain Decomposition, Image Processing.
Jack Dongarra (U. of Tennessee): Algorithms, Libraries.
Howard Elman (U. of Maryland): Stokes problems, Oseen Problems.
Gene Golub (Stanford): History, Future, Inner-Outer Iterations.
Franklin Luk (RPI): Signal and Image Processing.
David Silvester (UMIST): FEM, Navier-Stokes Equations.
Gilbert Strang (MIT): Wavelets, Filters.
Henk van der Vorst (U. of Utrecht): Krylov Methods, Implementation.
Andy Wathen (UK): Stokes Problems, Preconditioning.
Jinchao Xu (Penn. State): Multilevel Methods, Convergence Theory.

School Model
It will be a seven-day school with 10 main invited speakers.
Each main speaker will give three 40-min lectures.
There will also be several other lectures given by
speakers from the Asian region. There will be 5-6
lectures per day except for the fourth day which will
be reserved for excursion or social activities.
Demonstration and exercise sessions will be at the end of each day.
Lecture notes of the School will be distributed to attendees.

Call for Posters
The School will have a poster session for participants to exhibit
their research results. Authors are invited to submit their papers
(maximum four pages) on any topics related to scientific computing.
Please send the papers electronically or in hard copy form to

Dr. K.M. Yeung
Department of Mathematics
Chinese University of Hong Kong
Shatin, Hong Kong

Deadline for submission is December 1, 1995.

Registration fee is US$100 which includes all lecture notes
to be distributed at the School. To receive the registration
form, please send request to Dr. K.M. Yeung at address above.
A latex file of the form can be obtained by anonymous ftp at

General Information
Detail information of the School can be obtained at


From: Jerzy Wasniewski <>
Date: Fri, 22 Sep 1995 17:13:29 +0200 (METDST)
Subject: Workshop on Applied Parallel Computing in Lyngby, Denmark

August 18-21, 1996

UNI*C (The Danish Computing Centre for Research and Education)
IMM (The Institute of Mathematical Modelling of the Technical
University of Denmark.)
Jack Dongarra, University of Tennessee and Oak Ridge Nat. Lab.

August 18, 1996: Tutorial (topic to be announced later)
August 19-21,1996: PARA96 Workshop sessions

PLACE: Technical University of Denmark, DK-2800 Lyngby, DENMARK

Jack Dongarra, Tennessee University & Oak Ridge Nat. Lab., USA
Bengt Fornberg, University of Colorado, USA
Gene Golub, Stanford University, USA
Panos Pardalos, University of Florida, USA

A limited number of contributed talks and Poster sessions
will be selected for the workshop.

Abstracts (no more than one A4 page): June 15, 1996
Papers (between 5 and 10 pages): July 31, 1996

The PARA96 Proceedings will be published by Springer-Verlag
in their Lecture Notes on Computer Science series.

The PARA96 WWW page:

Anonymous ftp: ftp (or
your email address
cd uni-c/unijw/para96

Mailing list: To subscribe, send a message to
sub para-l yourname

Inquiries: PARA96, UNI*C, DTU, Bldg. 304
2800 Lyngby, Denmark
Attn: Jerzy Wasniewski
Email: Fax: (+45) 45 93 02 20
Tel: (+45) 45 88 39 99 after the tone 2426

The PARA96 meeting will be followed by a linear programming
workshop, August 22-24, 1996, organized by the Institute of
Mathematical Modelling.


From: Gal Berkooz <>
Date: Mon, 18 Sep 95 12:22:52 EDT
Subject: Position at BEAM Technologies

Employment Opportunity

Title: Computational Software Development Specialist.
Start Date: 1/1/96. Location: Ithaca, NY.

Responsibilities: Develop partial differential equation simulation
applications using an innovative software tool developed by BEAM;
support users who are using the software tool and are developing
applications with it (both inside and outside of BEAM); Participate
in scientific research projects involving the development of new
PDE based algorithms and applications; Participate in the
development of the software substrate itself.

Qualifications and Experience:
% Ph.D. in applied math. or engineering with at least two
years of experience.
% Solid background in finite elements as witnessed by writing
at least one complex nonlinear finite element simulation
% Experience with time dependent CFD simulation.
% Excellent computer and software development skills.
% At least two years of experience working in C++.
% Proven ability to work in a team.
% Excellent people, communication, and instructional skills.
% Motivation and desire to help users.

Salary and Benefits:
% Competitive salary commensurate with experience and
% Full benefits including 401K plan, health, vacation, etc.
% Stock option plan.

Send resume to:
c/o PDE search
BEAM Technologies, Inc.
110 N. Cayuga St.
Ithaca, NY


From: Iain Duff <>
Date: Sun, 24 Sep 1995 10:56:50 +0100
Subject: Position at CERFACS

Position available at CERFACS

We are looking for someone at post-doc level with experience, interest,
and background (with publications) in both mathematics and computer
The position is open in the framework of an ESPRIT contract in connection
with European reseach centres and industrial partners. For this project
we want someone with experience both in parallel computing and
optimization techniques. Basically, we have to identify the most
appropriate methods for solving optimization problems (arising in
Multi Body Simulation) suitable for a implementation on a parallel
platform. The type of target computer has to be selected according to the
parallel features of the selected numerical techniques, it may be either
shared memory multi-CPU workstation or network of computers. Once a
technique and a platform have been selected, the implementation will
have to be performed. Some issues related to parallel computing on a
network of computers will also be addressed (fault-tolerance, load
balancing, ...).
The research to be developed in the framework of this contract is clearly
industrially oriented.

The position is in the Parallel Algorithm Project at CERFACS,
where the main research activities are :
- Large sparse matrix calculations:
- direct linear solvers
- iterative linear solvers, preconditioning
- eigensolvers
- Domain decomposition
- Large scale nonlinear systems and optimization
- Reliability of numerical software
- Heterogeneous computing

For detailed information about CERFACS
URL address :

For more information about Toulouse, the city where CERFACS is located
URL address :

Please send email to


From: Dwight Duffus <>
Date: Mon, 18 Sep 1995 10:26:58 -0400
Subject: Position at Emory University



The Department of Mathematics and Computer Science, Emory University,
invites applications for an anticipated tenure track Assistant
Professorship or a tenured appointment, at the rank of Associate
Professor or Professor, effective 1996-97. Applicants must
have a research program in numerical analysis/computational science and
hold a PhD in Mathematics or Computer Science.

As the department offers several undergraduate programs within Emory
College, a PhD in Mathematics, and MS in Computer Science/Mathematics,
applicants are expected to have strong records, or promise, as
undergraduate and graduate teachers.

Applicants must include CV's, with at least three recommenders' names,
and have recommendation letters are sent to

Professor Dwight Duffus, Screening Committee
Department of Mathematics and Computer Science
Emory University
Atlanta GA 30322

Screening of applications will begin on 1 January 1996.

Emory University is an Affirmative Action/Equal Opportunity Employer.


From: Jon Tolle <>
Date: Tue, 19 Sep 95 09:10:36 EDT
Subject: Position at University of North Carolina


Applications are invited for one faculty appointment in
applied mathematics effective Fall l996. Candidates with
research in computational partial differential equations and
related areas are especially encouraged to apply. Rank and
salary depend on qualifications and budget considerations.
Ph.D. in mathematics and exceptionally strong research
record and commitment to excellent teaching required. At
least 3 years experience beyond the Ph.D. preferred. Send
curriculum vitae, abstract of current research program, and
four letters of recommendation to Search Committee Chairman,
Math. Dept., CB #3250 Phillips Hall, UNC at Chapel Hill,
Chapel Hill, NC 27599-3250. EO/AA Employer. Women and
minorities are encouraged to identify themselves
voluntarily. Completed applications received by November l,
l995 are assured of full consideration.


From: Mike Osborne <>
Date: Thu, 21 Sep 1995 17:17:17 +1000
Subject: Position at the Australian National University

Lecturer/Research Fellow in Mathematics
(Level B: fixed term)

Applications are invited for appointment to a teaching and research
position in Mathematics, jointly in the Faculties and the Institute of
Advanced Studies. The appointment will be made jointly with the Department
of Mathematics, Faculty of Science and School of Mathematical Sciences and
the Centre for Mathematics & its Applications (CMA), School of Mathematical
Sciences. The appointee will carry a half teaching load in the Department
of Mathematics and be assigned to an appropriate Research Program in the
CMA. The position will be at the level of Lecturer (fixed term) and
Research Fellow and will be for a period of three years. Preference will
be given to candidates with expertise in computational or applied
mathematics. Experience in tertiary teaching is desirable.

Salary: Lecturer/Research Fellow $42,198 - $50,111 pa.

Assistance with relocation expenses will also be provided. It is important
that the successful applicant take up appointment as soon as possible in

Enquiries and requests for further information including selection
criteria, can be addressed to:

Professor D W Wickramasinghe, Head, Department of Mathematics
Telephone (06) 249 4296, Fax (06) 249 4984, E-mail:

Professor P G Hall, Acting Head, CMA
Telephone (06) 249 3474, Fax (06) 5549,

Closing date: 30 October 1995

Ref: SMS 13.9.1

APPLICATIONS addressing the selection criteria should be submitted in
duplicate to the Secretary, The Australian National University, Canberra
ACT 0200, quoting reference number and including curriculum vitae, list of
publications and names and addresses of at least three referees. Email
addresses and/or fax numbers should be provided for referees so that
appointment procedures can be expedited. The University has a
"non-smoking" policy in all University buildings and vehicles.



From: Marilyn E. Madsen <>
Date: Tue, 19 Sep 1995 09:25:44 -0500 (CDT)
Subject: Postdoctoral Position at University of Minnisota

University of Minnesota
Computer Science Dept.

Postdoctoral Associate Position available.

A Postdoctoral Associate position is available to do research on the
control and optimization of systems described by PDEs and related DAEs,
with applications to bioengineering processes. Funding from NSF in support
of this research is anticipated. Applicants should have a strong background
and research experience in large-scale numerical optimization. Good knowledge
of PDEs and DAEs, and experience in parallel programming is also highly
desirable. A PhD in Computer Science, or a related field, is required.

The University of Minnesota provides a state-of-the-art environment
for supercomputing and parallel computing. In addition to the hardware
available to U of M researchers at the Minnesota Supercomputer Center, the
Computer Science Dept. also houses a cluster of both SGI and IBM
workstations and will soon receive an IBM SP2.

Interested applicants should send a resume and cover letter to
Professors Linda Petzold ( and J.B. Rosen

The University of Minnesota is an equal opportunity educator and employer.


From: Elias Lipitakis <>
Date: Thu, 21 Sep 95 15:31:26 +0300
Subject: New Journal, Computer Mathematics and its Applications

The new international journal "Computer Mathematics and its Applications"
is yearly published by the Hellenic Mathematical Society (HMS). To submit
a paper, please send a copy of your paper to the CMA Editor:
Prof. Elias A. Lipitakis
Department of Informatics - AUEB
76 Patission Street
Athens 104 34, Greece

or to any member of the Editorial Board. Information about subscription etc.
is available from:

Hellenic Mathematical Society
CMA Secretariat
34 Panepistimiou Street
Athens 106 79, Greece

Contents Volume 1, 1995

G.I. Marchuk (Moscow, Russia)
Applications of adjoint equations to problems of global change and environ-
ment protection, 1

V.I. Agoshkov (Moscow, Russia)
Control theory approaches in data assimilation processes, inverse problems
and hydrodynamics, 21

M. Yamamoto (Tokyo, Japan)
On ill-posednessand regularization for multidimensional inverse source
problems, 41

C.W. Groetsch (Cincinnati, USA)
Numerical methods for some inverse problems in non-linear heat-transfer, 49

C.T.H. Baker (Manchester, England)
Dynamics of discretized equations for DDE's, 61

W.H. Enright (Toronto, Canada)
Continuous numerical methods of ODE's and the implications for delay diffe-
rential equations, 69

K. Callivan, E. Gallopoulos, A. Sameh (Illinois, USA)
CEDAR- an experiment in parallel Computing, 77

E.A. Lipitakis (Athens, Greece)
Solving non linear elliptic and parabolic difference equations by explicit
preconditioned iterative methods based on sparse approximate inverses, 99

D.J. Evans (Loughborough, England)
The parallel implicit elimination method for solving linear systems, 119

Guo Ben-Yu (Shanghai, China)
Chebyshev spectral finite element approximation for fluid flow, 139


From: Ronald Boisvert <>
Date: Mon, 18 Sep 95 10:41:46 EDT
Subject: Contents, Transactions on Mathematical Software

(Note : Information on TOMS, including complete searchable Table of
Contents of all volumes and upcoming papers, with links to ACM
Algorithms, is available on the World Wide Web at

Table of Contents
ACM Transactions on Mathematical Software (TOMS)
Volume 21, Number 3 (September 1995)

Michele Goano
Algorithm 745: Computation of the Complete and Incomplete Fermi-Dirac

M. Dobmann, M. Liepelt and K. Schittkowski,
Algorithm 746: PCOMP: A Fortran Code for Automatic Differentiation

Stephen J. Sullivan and Benjamin G. Zorn
Numerical Analysis using Non-Procedural Paradigms

George Miminis and Helmut Roth
Algorithm 747: A FORTRAN Subroutine to Solve the Eigenvalue Assignment
Problem for Multi-input Systems using State Feedback

G. E. Alefeld, F. A. Potra and Yixun Shi
Algorithm 748: Enclosing Zeros of Continuous Functions


From: SIAM <>
Date: Wed, 20 Sep 95 10:47:22 EST
Subject: Contents, SIAM Control and Optimizations

NOVEMBER 1995 Volume 33, Number 6

Rendezvous Search on the Line with Indistinguishable Players
Edward J. Anderson and Skander Essegaier

Optimal Programs on Infinite Horizon 1
A. J. Zaslavski

Optimal Programs on Infinite Horizon 2
A. J. Zaslavski

COCOLOG: A Conditional Observer and Controller Logic for Finite
Peter E. Caines and Suning Wang

Remarks on Nonlinear Stochastic Partial Differential Equations: An
Application of the Splitting-up Method
Noriaki Nagase

Solution of Optimal Control Problems by a Pointwise Projected
Newton Method
C. T. Kelley and E. W. Sachs

On the Adaptive Control of Jump Parameter Systems via Nonlinear
Peter E. Caines and Ji-Feng Zhang

Periodic Stability of Nonlinear Flexible Systems with Damping
Koichiro Naito

Identification for Parabolic Distributed Parameter Systems with
Constraints on the Parameters and the State
Wenhuan Yu

A Convex Approach to the Mixed H_2/H_infinity Control Problem for
Discrete-Time Uncertain Systems
J. C. Geromel, P. L. D. Peres, and S. R. Souza

Finite-Dimensional Risk-Sensitive Control Problem
Alain Bensoussan and Robert J. Elliott

On the Topology of the Karush-Kuhn-Tucker Set under Mangasarian-
Fromovitz Constraint Qualification
Harald Gunzel

Pontryagin Maximum Principle for Semilinear and Quasilinear
Parabolic Equations with Pointwise State Constraints
Bei Hu and Jiongmin Yong

Risk-Sensitive Control on an Infinite Time Horizon
Wendell H. Fleming and William M. McEneaney

Parallel Gradient Distribution in Unconstrained Optimization
O. L. Mangasarian

The Continuum-Armed Bandit Problem
Rajeev Agrawal

Forms of Optimal Solutions for Separated Continuous Linear Programs
Malcolm C. Pullan


End of NA Digest