- Today's Editor:
- Cleve Moler
- The MathWorks, Inc.
- moler@mathworks.com

- Small Correction for Last Week's Digest
- Call for Nominations for Wilkinson Prize
- Change of Address for Joel Storch
- Numerical Linear Algebra Preprint Available
- Spheroidal Wave Functions
- Evaluation of an Exponential Integral
- MANPAK and DAEPAK, FORTRAN Packages
- New Book on Dynamical Systems and Numerical Analysis
- New Book on Inverse Problems
- New Book on Iterative Methods
- New Book on Parameter-Free Iterative Linear Solvers
- Reprint of Numerical Linear Algebra Book
- Seeking Collaborator or Position
- PARA96, The Final Call for the Registration and Hotel Reservation
- Two Conferences in Kyoto, Japan
- Report on NA Workshop in Rousse, Bulgaria
- SIAM Conference on Sparse Matrices
- Scalable Parallel Libraries Conference
- Conference Honoring Bill Gragg
- Conference on Optimization Software
- Report on Workshop on Accurate Eigensolving and Applications
- Position at University of Heidelberg
- Position at University of Minnesota
- Position at Cornell Theory Center
- Positions at Technical University in Clausthal, Germany
- Postdoctoral Positions at Los Alamos National Laboratory
- Postdoctoral Position at New York University
- Contents, Linear Algebra and its Applications
- Contents, SIAM Review
- Contents, SIAM Numerical Analysis

**URL for the World Wide Web:**
http://www.netlib.org/na-net/na_home.html
-------------------------------------------------------

From: Cleve Moler <moler@mathworks.com>

Date: Mon, 5 Aug 1996 08:40:55 -0400 (EDT)

**Subject: Small Correction for Last Week's Digest**

If you are archiving these Digests, please change the first line

after the mail header in last week's Digest to have the correct date

and issue number: Sunday, August 4, 1996 Volume 96 : Issue 29

-- Cleve

------------------------------

From: Allison Bogardo <bogardo@siam.org>

Date: Thu, 08 Aug 96 15:53:33 EST

**Subject: Call for Nominations for Wilkinson Prize**

SIAM is seeking nominations for the 1997 James H. Wilkinson Prize

in Numerical Analysis and Scientific Computing. The prize is

awarded every four years for research in, or other contributions

to, numerical analysis and scientific computing during the six

years preceding the award. The purpose of the prize is to

stimulate younger contributors and to help them in their careers.

The prize consists of a $1,000 cash award and an engraved plaque

and will be awarded at the 1997 SIAM Annual Meeting to be held at

Stanford University, July 14-18.

DEADLINE FOR NOMINATIONS IS OCTOBER 31, 1996.

Please send nominations to:

Allison Bogardo

SIAM

3600 University City Science Center

Philadelphia, PA 19104-2688

Telephone: (215) 382-9800

Fax: (215) 386-7999

E-mail: bogardo@siam.org

------------------------------

From: Joel Storch <Storch@courier10.aero.org>

Date: Mon, 5 Aug 1996 09:12:00 -0700

**Subject: Change of Address for Joel Storch**

I have recently left Draper Laboratory and am now at The Aerospace

Corporation in Los Angeles, CA.

Joel Storch

Phone: (310)336-5932

e-mail: storch@courier10.aero.org

------------------------------

From: Zbigniew Woznicki <r05zw@cx1.cyf.gov.pl>

Date: Fri, 9 Aug 1996 11:19:57 +0200

**Subject: Numerical Linear Algebra Preprint Available**

Numerical Linear Algebra Preprint Available

The following paper in a LaTeX input file is available each week

from Monday to Friday via anonymous ftp on cx1.cyf.gov.pl (148.81.40.10),

file: pub/woznicki/axel.tex

Z. I. Woznicki: "Axelsson's results versus the splitting principles."

Zbyszek

------------------------------

From: Wei Liu <liu@emerald.physics.utoronto.ca>

Date: Mon, 5 Aug 96 14:01:46 -0400

**Subject: Spheroidal Wave Functions**

Is there any code dealing with spheroidal wave functions?

Many thanks for you information.

Wei

liu@geophy.physics.utoronto.ca

------------------------------

From: Peter Knipp <pknipp@pcs.cnu.edu>

Date: Wed, 7 Aug 1996 17:17:03 -0400

**Subject: Evaluation of an Exponential Integral**

I am interested in evaluating the following function F for many

different values of A and B:

F(A,B)=definite integral (from x=0 to x=1) of [exp(Bx-A/x)]/x.

(The function F is used in Ewald's method for evaluating a two

dimensional lattice sum of Green's functions for Helmholtz'

equation.) The positive quantities A and B are often on the

order of unity (which obviously causes the integration to be

straightforward), but sometimes A can be quite small (which

causes a logarithmic divergence in F), and often A and/or B

are/is on the order of 1000.

My first question: Is F(A,B) "special" in the sense that it can

be related simply to a function named after a dead mathematician?

My second question: Does anyone have tips available for evaluating

F(A,B) in a reasonably efficient and accurate fashion?

Pete Knipp

Christopher Newport University

pknipp@pcs.cnu.edu

------------------------------

From: Werner C. Rheinboldt <wcrhein@vms.cis.pitt.edu>

Date: Mon, 05 Aug 1996 14:31:43 -0500 (EST)

**Subject: MANPAK and DAEPAK, FORTRAN Packages**

Prompted by many inquiries, I have decided to make available my

FORTRAN 77 packages for computations on implicitly defined manifolds

and for the solution of certain nonlinear differential algebraic

equations. They can now be downloaded from the netlib directory

/contin/manpak.

MANPAK is a package of utility programs for computations with

submanifolds of R^n that are implicitly defined by a system of

nonlinear equations F(x) = 0. Here F is a mapping from R^n to

R^m, m < n, such that rank DF(x) = m for x in M = {u in E; F(u)=0}

whence M is a submanifold of R^n of dimension d = n - m. There are

routines for establishing several types of local parametrizations

(coordinate systems) and -- once available -- for computing points

on M with given local coordinates. In addition, there are routines

for computing the first and second derivatives of these local

parametrizations and some other quantities, such as sensitivity

measures and the second fundamental tensor.

DAEPAK is a package of subroutines based on MANPAK for solving

six types of algebraically explicit differential algebraic equations

(DAEs); that is, of DAEs in which either the algebraic equations

and/or the algebraic variables are explicitly specified. There are

initial value problem solvers for the

index 1 DAEs F(u,u',w,t) = 0,

index-1 DAEs A(u)u' = G(u), F(u) = 0,

with optional facility for handling impasse points

index-2 DAEs G(u,u',w,t) = 0, F(u,t) = 0

index-2 DAEs A(u,t)u' + B(u,t)w = G(u,t), F(u,t) = 0

index-3 DAEs A(u,u',t)u" + B(u,u',t)w = G(u,u',t), F(u,t) = 0

index-3 DAEs M(u,t)u" + D_uF(u,t)^T w = G(u,u',t), F(u,t) = 0

(Euler Lagrange problems)

Both packages utilize a set of support routines collected in a

separate package MANAUX. In addtion, sample drivers for the

DAE-solvers are provided. A README file gives further details.

I would welcome any feedback and especially any suggestions for

additions and improvements.

------------------------------

From: Alan Harvey <harvey@csli.Stanford.EDU?

Date: Mon, 5 Aug 1996 17:22:06 -0700

**Subject: New Book on Dynamical Systems and Numerical Analysis**

I'm pleased to announce the publication of a new book of interest to NA-NET:

Dynamical Systems and Numerical Analysis

by

A.M. Stuart and A.R. Humphries

[Cambridge Monographs on Applied and Computational Mathematics 2]

published by Cambridge University Press

Dynamical systems are pervasive in the modelling of naturally occurring

phenomena. Most of the models arising in practice cannot be completely

solved by analytic techniques; thus, numerical simulations are of

fundamental importance in gaining an understanding of dynamical systems.

It is therefore crucial to understand the behaviour of numerical

simulations of dynamical systems in order to interpret the data obtained

from such simulations and to facilitate the design of algorithms which

provide correct qualitative information without being unduly expensive.

These two concerns lead to the study of the convergence and stability

properties of numerical methods for dynamical systems.

The first three chapters of this book contain the elements of the theory of

dynamical systems and the numerical solution of initial-value problems. In

the remaining chapters, numerical methods are formulated as dynamical

systems, and the convergence and stability properties of the methods are

examined. Topics studied include the stability of numerical methods for

contractive, dissipative, gradient, and Hamiltonian systems together with

the convergence properties of equilibria, phase portraits, periodic

solutions, and strange attractors under numerical approximation.

This book will be an invaluable tool for graduate students and researchers

in the fields of numerical analysis and dynamical systems.

Contents:

1. Finite Dimensional Maps

2. Ordinary Differential Equations

3. Numerical Methods for Initial Value Problems

4. Numerical Methods as Dynamical Systems

5. Global Stability

6. Convergence of Invariant Sets

7. Global Properties and Attractors Under Discretization

8. Hamiltonian and Conservative Systems

Appendices

Bibliography

Index

Published July 1996 700 pages 28 line diagrams 258 exercises

ISBN 0-521-49672-1 (Hardback)

For more information, consult the online catalogs at http://www.cup.org and

http://www.cup.cam.ac.uk, or send enquiries to harvey@roslin.stanford.edu

------------------------------

From: Heinz W. Engl <engl@indmath.uni-linz.ac.at>

Date: Wed, 07 Aug 1996 22:10:53 EDT

**Subject: New Book on Inverse Problems**

The following book has just appeared:

Heinz W. Engl, Martin Hanke, Andreas Neubauer

Regularization of Inverse Problems

Kluwer, Dordrecht, 1996

ISBN: 0-7923-4157-0

The table of contents can be found on my WWW-Page (see below).

Heinz W. Engl, Linz (Austria)

Prof.Dr.Heinz W. Engl E-Mail: engl@indmath.uni-linz.ac.at

Industriemathematik or na.engl@na-net.ornl.gov

Institut fuer Mathematik secretary: nikolaus@indmath.uni-linz.ac.at

Johannes-Kepler-Universitaet Phone: +43-(0)732-2468; ext.9219 or 693,

Altenbergerstrasse 69 secretary: 9220; home: +43-(0)732-245518

A-4040 Linz Fax: +43-(0)732-2468855

Oesterreich / Austria Telex: 2-2323 uni li a

World Wide Web: http://www.indmath.uni-linz.ac.at/

------------------------------

From: Bernd Fischer <fischer@informatik.mu-luebeck.de>

Date: Thu, 8 Aug 1996 15:12:19 +0200

**Subject: New Book on Iterative Methods **

I am pleased to announce that my book:

POLYNOMIAL BASED ITERATION METHODS FOR

SYMMETRIC LINEAR SYSYTEMS

Wiley-Teubner Series: Advances in Numerical Mathematics

ISBN: 0471 96796 3

is now available.

This book provides a systematic study for the solution of symmetric linear

systems by iterative methods with an emphasis on problems encountered when

solving indefinite systems.

One particular feature which distinguishes this book from the usual

literature on polynomial based iteration methods is its emphasis on the

properties of the underlying polynomials rather than more conventional

``matrix manipulations''. In particular, a development and discussion of

the properties of orthogonal polynomials leads to a unified and complete

analysis of state-of-the-art methods

for solving symmetric linear systems. These include the well-known CG, CR,

STOD, MCR, SYMMLQ, MINRES, LSQR, CRAIG, and Chebyshev iteration techniques.

For each of the numerical methods described a MATLAB implementation is provided,

the codes for which are available on the Internet.

In addition, the material covered includes schemes for computing the

asymptotic convergence rate of indefinite systems, for the estimation and

approximation of the eigenvalue distribution and for the approximation of

the A-norm of the error.

Finally, as a template for the occurrence of symmetric but indefinite

linear systems, a mixed finite element discretization of the Stokes problem

is discussed. The elementary derivations make this chapter accessible for

the non-specialist.

As the book is nearly self-contained, it can be used as an introduction to

the theory and implementation of polynomial based iteration methods.

Bernd Fischer

Institute of Mathematics

Medical University of Luebeck

------------------------------

From: Ruediger Weiss <ne03@rz.uni-karlsruhe.de>

Date: Fri, 9 Aug 1996 13:07:35 +0200 (CES)

**Subject: New Book on Parameter-Free Iterative Linear Solvers**

New book:

Parameter-Free Iterative Linear Solvers

Ruediger Weiss

published by Akademie Verlag

This book presents a unifying theoretical framework for iterative solvers

for linear systems. The focus is on parameter-free methods, i. e. methods

that can be applied without a priori knowledge of inner properties of

the systems. Despite the generality of the approach convergence estimates

and geometrical properties can be derived.

State-of-the-art solvers are surveyed and classified. Many new relations

between these methods are furnished leading to a deeper insight. Existing

gaps in the theory are pointed out and some visions for the design of more

efficient and robust solvers are given.

A valuation of established methods based on the theoretical results and

on numerical tests is given. Recipes for the application of particular

techniques are derived. The criteria are efficiency, robustness and the

possibility of parallelization.

This book has a triple aim: to simplify the analysis by a unified theory,

to survey and valuate state-of-the-art solvers and to give an introduction

to iterative solvers for non-experts in the field.

For more information turn to the web-site:

http://www.uni-karlsruhe.de/~ne03/book/

Dr. Ruediger Weiss

Rechenzentrum

Universitaet Karlsruhe

Postfach 6980

76128 Karlsruhe

Germany

Tel: +49 721 608 4034

Fax: +49 721 32550

Mail: weiss@rz.uni-karlsruhe.de

------------------------------

From: Biswa Datta <dattab@math.niu.edu>

Date: Thu, 8 Aug 96 09:23:48 CDT

**Subject: Reprint of Numerical Linear Algebra Book**

REPRINT OF NUMERICAL LINEAR ALGEBRA AND APPLICATIONS

I am pleased to announce that my book Numerical Linear Algebra and

Applications has now been reprinted ( third print) by my publisher

Brooks/Cole Publishing Company.

The MATLAB based software MATCOM that implements most of the algorithms

in the book has also been revised and updated.

I would like to take this opportunity to express my sincere gratitude

to those colleagues and students who helped me with corrections,

suggestions, etc., for this print.

The book can be used in both undergraduate and beginning level

graduate courses in Numerical Linear Algebra, Numerical Analysis,

and Applied Linear Algebra for Mathematics, Computer Science , and

Engineering courses.

If you are planning to use the book for your course this fall or

next spring, I urge you to obtain your complimentary copy from

the publisher, even if you have copies from the previous prints.

Here are the required information on the book :

Title : NUMERICAL LINEAR ALGEBRA AND APPLICATIONS

Author : Biswa Nath Datta ( E-mail : dattab@math.niu.edu)

Publisher : Brooks/Cole Publishing Company (A Division of

International Thomson Publishing Inc.), 511 Forest Lodge Road,

Pacific Grove, California 93950, USA.

Tel : 1-800-423-0563 (for Review)

Fax : (415) 592-3342 (for Review)

Tel: 1-800-354-9706 (for Purchasing)

Fax : (606) 525-0978 (for Purchasing)

------------------------------

From: Leonid P. Lebedev <lebedev@ns.unird.ac.ru>

Date: Mon, 12 Aug 96 11:39:09 +0300

**Subject: Seeking Collaborator or Position**

I am seeking a collaborator or/and a research and teaching position

in Latin America or other countries. The area of interests is

mathematical problems in mechanics; in particular, justification

of numerical methods, the theorems of existence in nonlinear shell

theory, industry applications. I published over 20 papers. I am

coauthor of the book

Functional Analysis; Applications in Mechanics and Inverse Problems

(published by Kluwer Acad. Publishers, 1996).

Additional information will be given by request.

Yours sincerely, Leonid P.Lebedev

Rostov State University, Russia

E-mail: lebedev@ms.unird.ac.ru

------------------------------

From: Jerzy Wasniewski <unijw@unidhp1.uni-c.dk>

Date: Sat, 10 Aug 1996 15:00:13 +0200 (METDST)

**Subject: PARA96, The Final Call for the Registration and Hotel Reservation**

PARA96, WORKSHOP ON APPLIED PARALLEL COMPUTING IN

INDUSTRIAL PROBLEMS AND OPTIMIZATION

Organized by:

UNI-C (The Danish Computing Centre for Research and Education) and

IMM (The Department of Mathematical Modelling of the Technical

University of Denmark) in collaboration with

Professor Jack Dongarra from the University of Tennessee and

Oak Ridge National Laboratory

Dates: August 18, 1996 - 2 tutorials:

1) Wavelets/Signal and Image Processing and

2) Programming Parallel Computers

August 19 - 21, 1996 - Workshop sessions

Place: UNI-C, The Danish Computing Centre for Research and Education,

The Technical University of Denmark, Bldg. 304, DK-2800 Lyngby,

DENMARK

The PARA96 meeting will be followed by a linear programming workshop,

August 21-24, 1996, organized by the Department of Mathematical Modelling.

31 speakers from several countries for the Workshop and Tutorial are

invited. 45 contributed talks from 20 countries in 15 parallel sessions

will be presented. Several experts from the computer manufactures are

invited.

The PARA96 workshop information are available by website:

http://webhotel.uni-c.dk/para/para96.html

More information are available from:

Jerzy Wasniewski, UNI-C, DTU, Bldg. 304

DK-2800 Lyngby, Denmark

tel: +4535878967, fax: +4535878990

email: workshop@uni-c.dk

------------------------------

From: Yuusuke Iso <iso@kusm.kyoto-u.ac.jp>

Date: Mon, 5 Aug 96 18:18:53 JST

**Subject: Two Conferences in Kyoto, Japan**

"The Carleman Estimate and Inverse Problems"

December 11 - December 13, 1996

Department of Mathematics, Kyoto University (Kyoto, Japan)

Chairmen: Masahiro Yamamoto(Univ.of Tokyo), Yuusuke Iso(Kyoto Univ.)

Sponsor: Sanwa Systems Development Co.,Ltd.

Symposium topics include: uniqueness of solutions to

inverse problems for PDE's; conditional stability

estimates; mathematical and numerical treatment of

ill-posed problems.

Keynote speakers: A.Boukhgueim(Russia), V.Isakov(USA)

D.Tataru(USA), M.Kubo(Japan)

For further information: e-mail;ipes@kusm.kyoto-u.ac.jp

WWW; www.kusm.kyoto-u.ac.jp

"Numerical and Mathematical Treatments for Elasticity"

January 8 - January 10, 1997

Research Institute for Mathematical Science

Kyoto University (Kyoto, Japan)

Chairman: Yuusuke Iso (Kyoto University)

The aim of the conference is to give an opportunity to

discuss some problems in elasticity by both mathematicians

and engineers. Especially, mathematical analysis for

anisotropic elasticity, numerical analysis for crack

problems and inverse problems in elasticity are

important topics in the conference.

Keynote speakers: V. Romanov(Russia), etc.

Call for Papers: Please submit an extended abstract

(not more than 2 pages) by November 15, 1996 to

to Prof. Y.Iso (Fax: +81-75-753-3711). The abstract

should be refereed. Proceedings of the conference will

be published by the domestic publication.

For further information: e-mail;ipes@kusm.kyoto-u.ac.jp

WWW; www.kusm.kyoto-u.ac.jp

------------------------------

From: James Nagy <nagy@rings.math.smu.edu>

Date: Tue, 6 Aug 1996 12:05:57 -0500 (CDT)

**Subject: Report on NA Workshop in Rousse, Bulgaria**

FIRST WORKSHOP ON NUMERICAL ANALYSIS AND APPLICATIONS

THE ANGEL KANCHEV UNIVERSITY OF ROUSSE

ROUSSE, BULGARIA

JUNE 24-27, 1996

We attended the First Workshop on Numerical Analysis and Applications

in Rousse, Bulgaria, and would like to summarize our enjoyable

experience. Although there were participants from 22 countries,

the conference had a distinctly eastern European flavour which was

interesting, stimulating and fun. There were many fruitful

conversations with our colleagues, and we look forward to reading the

book of the proceedings, to be published by Springer-Verlag.

The main tracks of the workshop were:

1. Numerical Linear Algebra

2. Numerical Methods for Differential Equations

3. Numerical Modelling

4. High Performance Scientific Computing

Summary of Talks:

The programme consisted of distinguished key speakers who treated us

to expositions of their work of a seminal nature in many topics.

* Tracks 1 and 4: Numerical Linear Algebra and

High Performance Scientific Computing

Bisseling - Numerical linear algebra on bulk synchronous parallel computers

Dimov - Iterative monte carlo algorithms for linear algebra problems

Godunov - Spectral portraits of matrices and criteria for

spectrum splitting

Szulc - Convex combinations of matrices - nonsingularity and

Schur stability

Tyrtyshnikov - Mosaic ranks and skeletons

Vassilevski - Stabilized hierarchical basis preconditioning methods

In addition, there were 27 other talks, including a minisymposium on

Computations in Image Reconstruction and Restoration. Attendees of

these tracks were rewarded with many interesting talks on a wide spectrum

of topics.

* Tracks 2 and 3: Differential Equations and

Numerical Modelling

Brugnano - BVP methods for ODE's

D'yakonov - Operator problems in strengthened Sobolev spaces and numerical

methods for them

Griewank - High order stiff ODE solvers using automatic differentiation

Jovanovic - Interpolation techniques & convergence estimates for fdm

Karageorghis - Conforming spectral decomposition schemes

Kaschiev - Newton's method for solution of one complex eigenvalue

problem

Lebedev - Explicit fdms with variable time steps for stiff systems

Puzynin - Iterative schemes and adaptive algorithms on the base of

continuous analogue of Newton's method for solving nonlinear equations

Shishkin - Diffusion flux for a class of singularly perturbed equations

Vabishchevich - Convection/diffusion problems

Zlatev - Large air pollution models

There were also 38 other contributed papers covering a wide spectrum of

related topics. The topic of stiffness seemed to be a recurring one. This

was seen in talks on Runge Kutta, Multi-step, variable step, automatic

differentiation and several other methods. The problem of stiffness appeared

in many of the numerical modelling applications that were presented.

We all enjoyed the "get together" dinner, the excursion to Veliko Tarnovo

and the official dinner in Gabrovo held in a warm and friendly Bulgaria.

P.S. Williams. London Guildhall University. U.K.

J.G. Nagy. Southern Methodist University. Dallas, Texas.

------------------------------

From: Trini Flores <flores@siam.org>

Date: Wed, 07 Aug 96 13:05:19 EST

**Subject: SIAM Conference on Sparse Matrices **

Second SIAM Conference on Sparse Matrices

October 9-11, 1996

Coeur d'Alene Resort

Coeur d'Alene, Idaho

The conference program will be mailed in mid-August. A condensed

version of it, including information on transportation, hotel,and

registration is now available on the World Wide Web. Point your web

browser to

http://www.siam.org/meetings/sm96/sm96home.htm

Important dates:

Monday, September 9, 1996 - deadline for hotel reservation

Wednesday, September 25, 1996 - deadline for advance registration

For additional information, contact SIAM. Telephone: 215-382-9800;

E-mail: meetings@siam.org. For hotel reservation, contact Coeur

d'Alene. Telephone: 208-765-4000; 800-688-5253 (toll free US).

------------------------------

From: Tony Skjellum <tony@Aurora.CS.MsState.Edu>

Date: Thu, 8 Aug 1996 08:55:43 -0500

**Subject: Scalable Parallel Libraries Conference**

Scalable Parallel Libraries Conference III (SPLC96)

October 24-25, 1996

National Science Foundation Engineering Research Center

for Computational Field Simulation,

Mississippi State, Mississippi

The definitive workshop/conference on scalable libraries and

high performance middleware.

Revised Short Announcement and Call for Papers & Posters

See http://www.erc.msstate.edu:/splc96

The paper deadlines (see below) are extended.

Paper Deadline: September 15, 1996 REVISED

Notification of acceptance: October 1, 1996 REVISED

Final papers to publisher: October 30, 1996 REVISED

Poster Deadline: September 15, 1996

Notification of acceptance: October 1, 1996

It is STRONGLY preferred that proposal to present be sent by e-mail to

splc96-conf@erc.msstate.edu.

October 23, 1996

Pre-Conference Tutorial: (MPI: The Message Passing Interface)

A practical prerequisite for building scalable libraries is an understanding

of the MPI system. This advanced tutorial covers MPI uses for building

parallel software assuming basic MPI knowledge.

------------------------------

From: Lothar Reichel <reichel@mcs.kent.edu>

Date: Thu, 8 Aug 96 16:38:28 EDT

**Subject: Conference Honoring Bill Gragg**

"ODE to Linear Algebra and Rational Approximation"

A conference on the occasion of William B. Gragg's 60th birthday

A conference is scheduled on Friday and Saturday, November 1-2, 1996, at

the Naval Postgraduate School in Monterey, California, on the occasion of

Bill Gragg's 60th birthday. The scientific program will focus on those areas

of mathematics and scientific computing where Gragg has made contributions

over the years. These include the numerical solution of ordinary differential

equations, linear algebra with applications, and rational approximation. Many

experts in these areas have already agreed to present talks. However, a few

slots may still be available. Contact Lothar Reichel (reichel@mcs.kent.edu) if

you would like to join Bill Gragg's colleagues and friends on this occasion.

A special issue of the Journal of Computational and Applied Mathematics

dedicated to Bill Gragg is planned. Deadline for submission is November 2,

1996. Submitted papers will undergo the usual refereeing process. Contact

Greg Ammar (ammar@math.niu.edu) or Daniela Calvetti

(calvetti@laplace.math.stevens-tech.edu) if you would like to contribute a

paper to the special issue.

Information about the meeting will be posted at the web site

http://math.nps.navy.mil/Conference/

The organizing committee

Greg Ammar

Carlos Borges

Daniela Calvetti

Lothar Reichel

------------------------------

From: Gerardo Toraldo <toraldo@matna2.dma.unina.it>

Date: Fri, 9 Aug 1996 18:20:21 -0600

**Subject: Conference on Optimization Software**

P R E L I M I N A R Y A N N O U N C E M E N T

Short Conference on

``HIGH PERFORMANCE SOFTWARE FOR NONLINEAR OPTIMIZATION:

STATUS AND PERSPECTIVES''. Ischia, Italy 4 - 6 June 1997

H P S N O 97

The Centro di ricerche per il calcolo Parallelo e i Supercal-

colatori (CPS), a joint research center of the CNR (Consiglio

Nazionale delle Ricerche) and the University of Naples

``Federico II'', will host a short conference entitled ``High

Performance Software for Nonlinear Optimization on 4-6 June

1997 in Ischia (which is one of the islands in the bay of Naples),

Italy.

The Conference will follow the HPSNO95 Conference that was held

in Capri in 95, whose main contributions were published in a

special issue of Computational Optimization and Applications.

The focus of the conference is the current state-of-the-art in

optimization software and, in particular, optimization

software for high performance computers. The conference will

provide an authoritative overview of the nonlinear optimization

field, including algorithms, software evaluation, implementation

issues, applications and future areas of research.

TOPICS OF INTEREST include: (Parallel) Computational experiments,

Large-Scale Constrained and Unconstrained Problems, Global Optimi-

zation, Quadratic Programming, Automatic Differentiation, Linear

and Nonlinear Least Squares, Semidefinite Programming, Numerical

Linear Algebra problems arising in Optimization, Solution of Large

Nonlinear Systems, Linear Complementary Problems, Nonsmooth

Optimization, Combinatorial Optimization, Applications in Sciences,

Management and Engineering.

INVITED SPEAKERS (Preliminary list)

Chris H. Bischof (Argonne National Laboratory, USA)

Nick Gould (Rutherford Appleton Laboratory)

Jorge J. More' (Argonne National Laboratory, USA)

Panos Pardalos (University of Florida, Gainesville, USA)

Mauricio G.C. Resende (AT&T Research, Murray Hill, USA)

Margaret Wright (AT&T Bell Laboratories, Murray Hill, USA)

CONTRIBUTED PRESENTATIONS

A selected number of contributed presentation and posters will be

selected for the conference.

A subsequent announcement with deadlines and more details about

the conference will be made available by September 15.

for the Organizing Committee:

Prof. Almerico Murli or to Prof. Gerardo Toraldo

Universita` di Napoli "Federico II", Dip. di Matematica e Appl.,

Complesso Monte S.Angelo, Via Cintia 80126, Napoli - ITALY.

E-MAIL: murli@matna2.dma.unina.it toraldo@matna2.dma.unina.it

------------------------------

From: Ivan Slapnicar <slap@fesb.hr>

Date: Sun, 11 Aug 1996 11:39:18 +0200 (MET DST)

**Subject: Report on Workshop on Accurate Eigensolving and Applications**

``International Workshop on Accurate Eigensolving and Applications''

Split, Croatia, July 12-16, 1996

A small group of specialists gathered together in the fascinating

city of Split on the Croatian Coast. The goal was to share their

knowledge of methods to solve the problem $Ax = \lambda Bx$

(or its singular value pendant) to as much accuracy as the data

warrants. In particular, there is a need to describe the structure

of matrices $A,B$, which determine their small eigenvalues (the

ones of interest in most, but not all applications) to high relative

accuracy. For example, consider the stiffness and mass matrices,

usually called $K$, $M$, obtained by finite differences

approximation. For one-dimensional problems the unassembled form

$NDN^t$ does determine the eigensolution $(NDN^t - \lambda M)v = 0$

to high relative accuracy, but more general finite element models,

especially those in high dimensions, are still undecided.

While it was already known that some factorizations like QR

may essentially improve the computed accuracy of the singular

values, we have now learned that the same is true of completely

pivoted LU - a deeply non-unitary process. Also the highly accurate

singular values of a bidiagonal were shown to tune the subsequent

inverse iterations to keep both their high speed and the necessary

orthogonality.

The organizers, Professors Barlow, Slapnicar and Veselic, thought

hard about the format of the meeting. The participants fell into

2 groups, about 10 senior researchers active on these problems

(Demmel, Drmac, Hari, Ipsen, Parlett, Ruhe, and the organizers)

and about 15 graduate students who are writing dissertations in this

area. All participants stayed in one of the student dormitories of

the University of Split, the formal host of the Workshop. After

breakfast a small caravan of cars made its way to the Department

of ME, EE and Naval Arch. There were just 3 one hour talks in the

morning and at most one in the afternoon. This left time for

group discussions on Open Problems, Software and a possible

monograph.

The local organizer, Ivan Slapnicar, had arranged an impressive

program of entertainment, including among others, a guided tour of

Diocletian's palace (from which the city grew in the 5th century),

a full day on a wonderful Zlatni Rat Beach on the island of Brac

and attending an open air performance of Verdi's Nabucco. The weather

was as usual, superb. The participants were looked after very well

by local organizers.

How can you tell a workshop from a regular meeting? Regular meetings

are dominated by overhead projectors, workshops make use of the

blackboard and all talks are peppered with questions from senior

researchers while graduate students can learn the habit of

interrupting.

Although there were only 15 talks in 4 working days there was a

consensus that the remaining time must allow more space for

informal technical work.

The list of talks and the abstracts are available at the web site

http://adria.fesb.hr/~slap/workshop.

At the end of the Workshop, Jesse Barlow announced the follow-up

meeting at the Pennsylvania State University, State College, PA,

in two years.

Beresford Parlett

------------------------------

From: Margret Rothfuss <SciCom@IWR.Uni-Heidelberg.De>

Date: Mon, 5 Aug 1996 13:35:33 +0100

**Subject: Position at University of Heidelberg**

Interdisciplinary Center for Scientific Computing (IWR)

University of Heidelberg/Germany

The IWR offers two positions within the project jointly funded

by the Federal Ministry of Education, Science, Research and

Technology (BMBF), BASF AG and Hoechst AG. The work

involves the development of optimization methods and algorithms

for optimal experiment design in chemical kinetics and chemical

engineering. The algorithms are designed and implemented in

cooperation with scientists from BASF, Hoechst and

Fachhochschule Frankfurt.

The positions are available for a period of

two years.

The salary is regulated by the German BAT contract:

BAT IIa.

The ideal candidates have experience in the specification and

implementation of user friendly application software and a solid

background in numerical techniques (SQP) for nonlinear

constrained optimization problems (position 1) respectively

discretization methods for differential-algebraic equations

(position 2). Fluency in German or English is requested, a

doctorate degree in mathematics is desirable.

Application including a detailed CV, list of publications,

photograph and copies of diploma and an abstract of the PhD

thesis should be sent to

Dr. Johannes Schloeder

Keyword: Optimal Experiment Design

IWR

Universitaet Heidelberg

Im Neuenheimer Feld 368

D-69120 Heidelberg

e-mail: J.Schloeder@iwr.uni-heidelberg.de

------------------------------

From: Willard Miller <MILLER@fs1.itdean.umn.edu>

Date: Mon, 5 Aug 1996 08:09:17 CST

**Subject: Position at University of Minnesota**

DIRECTOR

INSTITUTE FOR MATHEMATICS AND ITS APPLICATIONS

University of Minnesota

The Board of Governors of the Institute for Mathematics and its

Applications (IMA) and the University of Minnesota seek a new Director

of the IMA for an appointment beginning September 1997. The new

Director will be offered a Professorship in the School of Mathematics

of the University of Minnesota. Candidates should have the

qualifications to provide scientific and administrative leadership to

the IMA. Among the duties are program development, fund raising and

preparation of proposals, collaboration with industry, and formulation

of plans for evolution of the Institute. Distinguished academic

credentials and a record of scientific leadership are required. Salary

and term as Director of the IMA are negotiable.

The IMA was established in 1982 with the support of the National

Science Foundation. The Institute has a two-fold mission: To identify

problems and areas of mathematical research needed in other sciences;

and to encourage the participation of mathematicians in these areas of

application by providing settings conducive to the solution of such

problems, and by demonstrating that first-rate mathematics can make a

real impact in the sciences. The IMA scientific programs allow

mathematicians and other scientists to share a stimulating research

environment. The IMA runs annual and summer theme programs with many

workshops and nearly a thousand participants a year, a Postdoctoral

Training Program in the area of the theme year, an ongoing Industrial

Postdoctoral Program, and an Industrial Problems Seminar where

industrial scientists are invited to present problems. There are 13

members in the IMA Participating Corporations Program, a formalized

relationship between the IMA and industrial scientists; and 29 IMA

Participating Institutes, a consortium of universities who provide

valuable support and guidance.

Nominations and applications should be sent to Professor Willard

Miller, Chair, IMA Director Search Committee, IMA, 514 Vincent Hall,

University of Minnesota, Minneapolis, MN 55455. Consideration of

applications will begin December 15, 1996.

The University of Minnesota is an Equal Opportunity Educator and

Employer.

Willard Miller, Jr.

Professor and Associate Dean for Finance & Planning

Institute of Technology, University of Minnesota

105 Walter Library, 117 Pleasant Street S.E.

Minneapolis, Minnesota 55455

miller@ima.umn.edu 612-624-2006 FAX: 612-624-2841

------------------------------

From: Jamie Washburn <washburn@tc.cornell.edu>

Date: Tue, 6 Aug 1996 15:40:19 -0400

**Subject: Position at Cornell Theory Center**

The Cornell Theory Center, a National Science Foundation center for high

performance computing in science and engineering, seeks candidates for the

position of Scientific Applications Consultant.

This person will provide highly specialized and complex consulting and

scientific applications support to the Theory Center's national and

international scientific and research community; provide in-depth

consulting and advice to researchers in enabling scientific applications on

parallel architectures, analyzing program execution, and optimizing

performance; work closely with users in analyzing problems and developing

solutions; and investigate, resolve or refer reported problems.

Minimum Position Requirements:

BS in a scientific or engineering discipline, or equivalent combination of

education, research, and experience. Advanced degree strongly preferred.

3-5 years FORTRAN or C programming experience in a scientific environment.

Demonstrated ability to work with researchers using high performance

computing. Scientific applications, parallel programming, and UNIX

experience highly desirable. Excellent interpersonal, communication, and

organizational skills. For consideration, send letter and resume to Julia

Addy, Theory Center, Frank H.T. Rhodes Hall, Cornell University, Ithaca, NY

14853-3801 AA/EOE

For additional information about the Theory Center, please refer to our

World Wide Web home page located at: http://www.tc.cornell.edu/

Jamie Washburn

washburn@tc.cornell.edu

Human Resources

Theory Center, Cornell Univ.

538 Frank H.T. Rhodes Hall

Ithaca, NY 14853-2601

Phone: (607) 254-8701 Fax: (607) 254-8888

------------------------------

From: Susanne Steinborn <Susanne.Steinborn@isaf-gs.tu-clausthal.de>

Date: Fri, 9 Aug 1996 14:34:26 +0200 (MET DST)

**Subject: Positions at Technical University in Clausthal, Germany**

RESEARCH POSITIONS IN WELDING ENGINEERING

Research positions are available immediately at the Institute of Welding

Technology (ISAF) of the Technical University in Clausthal.

Successful candidates have experience in one or more of the areas

welding technology, materials science, automation of processes, mathematics

and information sciences.

Work will be done in research projects of fusion welding and cladding with

automated welding techniques including the numerical simulation and control

of processes.

The salary is regulated by the German BAT contract.

The appointment will be nonpermanent.

Women and handicapped persons are especially encouraged to apply.

Application, including curriculum vitae, relevant certificates and an

outline of scientific background should be sent to:

Dr.-Ing. B. Bouaifi

ISAF

TU Clausthal

Im Schleeke 112

D-38640 Goslar

Tel: (05321) 3470-0

Fax: (05321) 3470-40

E-mail: stbb@isaf-gs.tu-clausthal.de

WWW homepage: http://www.isaf.tu-clausthal.de

------------------------------

From: Wayne Joubert <wdj@c3serve.c3.lanl.gov>

Date: Tue, 6 Aug 1996 13:03:04 -0600 (MDT)

**Subject: Postdoctoral Positions at Los Alamos National Laboratory**

Post Doctoral Fellowship Positions

Los Alamos National Laboratory

(PARALLEL COMPUTATION AND NUMERICAL LINEAR ALGEBRA)

The Scientific Computing Group (CIC-19) at Los Alamos National Laboratory is

currently seeking highly motivated Ph.D. graduates to participate in

the Post Doctoral Fellowship program. Graduates with experience in any

or all of the following categories are encouraged to apply:

Numerical Linear Algebra

Parallel Computer Programming

Experience with Fortran 90, HPF, PVM and MPI on parallel machines such as

the Cray T3D, Connection Machine CM-5, IBM SP-2, SGI Power Challenge and

workstation clusters is desirable. Experience with iterative linear

solver methods such as conjugate gradient methods and incomplete Cholesky

preconditioners is also desirable.

A Ph.D. completed within the last three years or soon to be completed is

required. Appointments have a duration of two years, with the possibility

of extension for a third year.

To receive fullest consideration for all fellowship possibilities, we must

receive your application as soon as possible. Interested individuals are

encouraged to send a copy of their resume by e-mail, fax, or U.S. mail to:

Wayne Joubert

Los Alamos National Laboratory

Group CIC-19, MS B256

Los Alamos, NM 87545

EMAIL: wdj@lanl.gov

FAX: 505-667-1126

Los Alamos National Laboratory is an equal-opportunity employer.

------------------------------

From: Tamar Schlick <schlick@acf4.NYU.EDU>

Date: Fri, 9 Aug 1996 17:48:26 -0400 (EDT)

**Subject: Postdoctoral Position at New York University**

Postdoctoral Position

in Computational Mathematics/Structural Biology

at New York University

Applications are invited for a postdoctoral

position involving molecular and Brownian

dynamics simulations of DNA supercoiling

at New York University.

Ph.D. recipients in various areas are welcome,

but a solid background in computing and applied

mathematics, along with strong knowledge in

biophysics or chemistry, is highly desired.

Applications in writing, including full curriculum

vitae, statement of research interests, and three

reference letters should be sent to: Tamar Schlick,

Department of Chemistry and the Courant Institute

of Mathematical Sciences, New York University,

251 Mercer Street, New York, NY 10012 USA.

For further information, contact T.S. at the

email address schlick@nyu.edu , by phone

(212-998-3116) or fax (212-995-4152).

You are also invited to check out the group's

home page on: http://monod.biomath.nyu.edu/

for related information.

------------------------------

From: Richard Brualdi <brualdi@math.wisc.edu>

Date: Mon, 5 Aug 1996 11:03:56 -0500 (CDT)

**Subject: Contents, Linear Algebra and its Applications**

LINEAR ALGEBRA AND ITS APPLICATION

Contents, Volume 245

Jin-Hsien Wang (Kaohsiung, Taiwan, Republic of China)

Product of Invertible Operators of Quadratic Type 1

Stewart W. Neufeld (Winnipeg, Canada)

A Diameter Bound on the Exponent of a Primitive Directed Graph 27

Ra#l Andrade and Alicia Labra (Santiago, Chile)

On a Class of Baric Algebras 49

I. Gohberg (Tel-Aviv, Israel), M. A. Kaashoek, and J. Kos (Amsterdam, The

Netherlands)

The Asymptotic Behavior of the Singular Values of Matrix Powers and

Applications 55

Naum Krupnik (Ramat-Gan, Israel) and Steffen Roch (Leipzig, Germany)

On Invertibility Symbols in Banach Algebras 77

J. Rudolph (Stuttgart, Germany)

Duality in Time-Varying Linear Systems: A Module Theoretic Approach 83

J. W. Hoffmann (Kaiserslautern, Germany) and P. A. Fuhrmann (Beer Sheva, Israel)

On Balanced Realizations of Bounded Real and Positive Real Functions 107

Zhi-hao Cao, Jin-jun Xie (Shanghai, People's Republic of China), and Ren-Cang

Li (Berkeley, California)

A Sharp Version of Kahan's Theorem on Clustered Eigenvalues 147

Kirill A. Kopotun (Edmonton, Alberta, Canada)

A Note on the Convexity of the Sum of Subpermanents 157

Keith G. Woodgate (London, United Kingdom)

Least-Squares Solution of F = PG Over Positive Semidefinite Symmetric P 171

Sambhavi Lakshminarayanan (New York, New York) and R. Chandrasekaran

(Richardson, Texas)

Tessellation and g-Tessellation of Circulants, Q6, and Qt6 191

Ettore Fornasini and Maria Elena Valcher (Padova, Italy)

On the Spectral and Combinatorial Structure of 2D Positive Systems 223

Patrick J. Rabier and Werner C. Rheinboldt (Pittsburgh, Pennsylvania)

Classical and Generalized Solutions of Time-Dependent Linear Differential-

Algebraic Equations 259

M. Koppinen (Turku, Finland)

Three Automorphism Theorems for Triangular Matrix Algebras 295

Patrick J. Rabier and Werner C. Rheinboldt (Pittsburgh, Pennsylvania)

Time-Dependent Linear DAEs With Discontinuous Inputs 305

Nicolau C. Saldanha and Carlos Tomei (Rio de Janeiro, Brazil)

The Accumulated Distribution of Quadratic Forms on the Sphere 335

J. A. Dias de Silva (Lisboa, Portual)

New Conditions for Equality of Decomposable Symmetrized Tensors 353

Author Index 373

------------------------------

From: SIAM <tschoban@siam.org>

Date: Mon, 05 Aug 96 12:12:20 EST

**Subject: Contents, SIAM Review**

SIAM Review

September 1996, Volume 38, Number 3

CONTENTS

ARTICLES

On Projection Algorithms for Solving Convex Feasibility Problems

Heinz H. Bauschke and Jonathan M. Borwein

Conjugate Gradient Methods for Toeplitz Systems

Raymond H. Chan and Michael K. Ng

Modelling the Stem Curve of a Palm in a Strong Wind

C. Philipsen, S. Markvorsen, and W. Kliem

Erratum and Reformulation: On the Stem Curve of a Tall Palm in a Strong Wind

Donald F. Winter

CASE STUDY FROM INDUSTRY

Catastrophe Theory Implications for Rightsizing when Planning Interim Solutions

for Progressing from a Partial Mainframe to Client-Server Distributed Databases:

3D Previewing of Possible Problems

Barry S. Thornton and W. T. Hung

CLASSROOM NOTES

The Use of Linear Programming in the Construction of Extremal Solutions to

Linear Inverse Problems

Stephen P. Huestis

The Matrix Exponential

I. E. Leonard

PROBLEMS AND SOLUTIONS

BOOK REVIEWS

Limit Theorems of Probability Theory: Sequences of Independent Random Variables

(Valentin V. Petrov), Wlodzimierz Bryc

Parametric Statistical Theory (Johann Pfanzagl), Morris L. Eaton

Observational Studies (Paul R. Rosenbaum), Daniel F. Heitjan

Moving Finite Elements (M. J. Baines), Weizhang Huang

Optimization and Dynamical Systems (Uwe Helmke and John B. Moore), Yuji Kodama

Asymptotics of Nonlinearities and Operator Equations (Alexander M.

Krasnosel'skii), Jean Mawhin

Math into LATEX: An Introduction to LATEX and AMS-LATEX (George Grotzes),

Kenneth R. Meyer

An Introduction to Infinite-Dimensional Linear System Theory (R. F. Curtain and

H. J. Zwart), K. A. Morris

Modeling, Analysis and Control of Dynamic Elastic Multi-Link Structures (J. E.

Lagnese, G. Leugeuring, and E. J. P. G. Schmidt), Serge Nicaise

Introduction to Perturbation Methods (M. H. Holmes), Robert E. O'Malley, Jr.

Global Dynamics, Phase Space Transport, Orbits Homoclinic to Resonances, and

Applications (Stephen Wiggins), Kenneth J. Palmer

Perturbation Methods in the Computer Age (David C. Wilcox), R. H. Rand

The Technique of Pseudodifferential Operators (H. O. Cordes), Michael Taylor

Multigrid Methods for Finite Elements (V. V. Shaidurov), Jinchao Xu

Multigrid Methods for Process Simulation (W. Joppich and S. Mijalkovic), Jinchao

Xu

Mathematical Go Chilling Gets the Last Point (Elwyn Berlekamp and David Wolfe),

Zhiping You and James A. Yorke

SELECTED COLLECTIONS

LATER EDITIONS

CHRONICLE

------------------------------

From: SIAM <tschoban@siam.org>

Date: Wed, 07 Aug 96 10:40:21 EST

**Subject: Contents, SIAM Numerical Analysis**

SIAM Journal on Numerical Analysis

OCTOBER 1996, Volume 33, Number 5

CONTENTS

Fast Algorithms for Polynomial Interpolation, Integration, and Differentiation

A. Dutt, M. Gu, and V. Rokhlin

The Runge-Kutta Theory in a Nutshell

Peter Albrecht

A First-Order Exactly Incompressible Finite Element for Axisymmetric Fluid Flow

Barry Bernstein, Kathleen A. Feigl, and Elwood T. Olsen

Two-Grid Discretization Techniques for Linear and Nonlinear PDEs

Jinchao Xu

On the Superconvergence of Galerkin Methods for Hyperbolic IBVP

David Gottlieb, Bertil Gustafsson, Pelle Olsson, and Bo Strand

Convergence of a Boundary Integral Method for Water Waves

J. Thomas Beale, Thomas Y. Hou, and John Lowengrub

Analysis and Application of Fourier-Gegenbauer Method to Stiff Differential

Equations

L. Vozovoi, M. Israeli, and A. Averbuch

Piecewise Linear Petrov-Galerkin Error Estimates for the Box Method

Thomas Kerkhoven

The Fourier-Finite-Element Method for Poisson's Equation in Axisymmetric Domains

with Edges

Bernd Heinrich

The Approximate Solution of Defining Equations for Generalized Turning Points

A. Griewank and G. W. Reddien

Sequential Regularization Methods for Higher Index DAEs with Constraint

Singularities: The Linear Index-2 Case

Uri M. Ascher and Ping Lin

A New Class of Discretization Methods for the Solution of Linear

Differential-Algebraic Equations with Variable Coefficients

Peter Kunkel and Volker Mehrmann

Extra Smoothness Requirements for Galerkin Methods for the Wave Equation

Mark C. Haase

Parallel Treatment of a Class of Differential-Algebraic Systems

J. Bahi, E. Griepentrog, and J. C. Miellou

Uniqueness and Nonuniqueness for the Approximation of Quasilinear Elliptic

Equations

N. Andre and M. Chipot

Quadrature Error Bounds with Applications to Lattice Rules

Fred J. Hickernell

A Multiple-Exchange Algorithm for Complex Chebyshev Approximation by Polynomials

on the Unit Circle

Ching-Yih Tseng

High-Order Positivity-Preserving Kinetic Schemes for the Compressible Euler

Equations

J. L. Estivalezes and P. Villedieu

Qualitative Analysis of Newton's Flow

Vladimir Janovsky and Viktor Seige

------------------------------

End of NA Digest

**************************

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