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

- UMIST .ne. University of Manchester
- PDE with Interior Boundary Condition
- New Home Page for Baltzer Science Publishers
- Software for Mathews' Numerical Methods Textbook
- New Book on ODEs
- C Code for Shortest Path Problem
- LIPSOL, MATLAB Linear Programming Package
- New Software Package for Sparse Linear Systems Available in WWW
- Richard Lehoucq is the 1995 J. H. Wilkinson Fellow
- Sven Hammarling is Visiting UNI*C, Denmark
- Newest Release of DSSLIB Available for SPARC
- Southeastern Atlantic Conference on Differential Equations
- SIAM Conference on Discrete Mathematics
- SIAM Workshop on Computational Differentiation
- Conference in Honor of Lax & Nirenberg
- Position at University of Wales, Aberystwyth

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

From: Bill Dold <J.W.Dold@bristol.ac.uk (Bill Dold)>

Date: Mon, 17 Jul 1995 10:47:24 +0000

**Subject: UMIST .ne. University of Manchester**

[Ed. note: Sorry, I erred in the Subject line for these two submissions

last week. -- Cleve]

Many thanks for putting my two submissions onto the na.digest about

lectureships and a studentship in UMIST.

Unfortunately, you altered "UMIST" in my subject heading to "University

of Manchester". I know that it is confusing, but UMIST is not the

same thing (indeed is now completely different from) the University

of Manchester. It is clearly too late now to change anything on the

e-mailed digest, but I wonder if you could correct the version that

is made available on the WWW. I'll try to make sure that the difference

is made clearer in any future submission.

Many thanks --- Bill Dold

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

From: Guus Segal <G.Segal@dutiwv.twi.tudelft.nl>

Date: Mon, 17 Jul 1995 12:02:04 +0200 (METDST)

**Subject: PDE with Interior Boundary Condition**

Dear colleages:

I want to solve the following problem by finite elements:

Consider two region separated by a membrane.

In each of the regions the pressure satisfies the Laplacian equation

Delta p = 0

At the membrane we have the following interface condition:

a(x,y,z)*(P_upper - P_lower) + b(x,y,z)*dP/dn = c(x,y,z)

(P, a, b and c real, b positive)

Is there anybody who can suggest to me how to implement this interface

condition?

Guus Segal

Fac. of Technical Mathematics and Informatics

Delft University of Technology

Mekelweg 4

P.O. Box 5031

2600 GA Delft

The Netherlands

Tel. (31) 15 - 785535

Fax. (31) 15 - 787209

E-mail: G.Segal@math.tudelft.nl

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

From: Baltzer Science Publishers <publish@baltzer.nl>

Date: Mon, 17 Jul 1995 13:57:27 +0200

**Subject: New Home Page for Baltzer Science Publishers**

Baltzer Science Publishers are pleased to announce the creation of our new

Homepage site on the World Wide Web at: http://www.nl.net/~baltzer/

The homepage provides full details of all our journals together with

ordering information, author instructions and a copy of the Baltzer Style

File for use by authors. There are also links to other useful sites.

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

From: John Mathews <mathews@ccvax.fullerton.edu>

Date: Mon, 17 Jul 1995 05:45:51 -0800 (PST)

**Subject: Software for Mathews' Numerical Methods Textbook**

Complimentary software for teaching numerical analysis using

C, FORTRAN, Pascal and MATLAB is available for the textbook:

Numerical Methods for Mathematics, Science & Engineering, 2e

by John H. Mathews published by Prentice Hall, 1992

ISBN# 0-13-624990-6 and ISBN# 0-13-625047-5

Files are located at:

ftp://ftp.mathworks.com/pub/books/mathews/c

ftp://ftp.mathworks.com/pub/books/mathews/fortran

ftp://ftp.mathworks.com/pub/books/mathews/pascal

ftp://ftp.mathworks.com/pub/books/mathews/matlab

Best Regards,

John Mathews

Math Department

California State University

Fullerton, CA 92634 USA

mathews@fullerton.edu

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

From: Kevin Burrage <kb@maths.uq.oz.au>

Date: Wed, 19 Jul 95 09:08:57 EST

**Subject: New Book on ODEs**

Announcing a new book:

Available from August 3, 1995

Parallel and Sequential Methods for Ordinary Differential Equations

Kevin Burrage

ISBN 0 19 853432 9

Published by:

Numerical Mathematics and Science Publication Series

Oxford Science Publishers

Clarendon Press, 1995,

Walton Street OX2 6DP Oxford, UK

phone UK 01865 56767

Contact in the USA

OUP Inc. 198 Madison Ave

New York , NY 10016

phone: 212 726 600

Material covered includes a chapter on parallel computing in general,

2 chapters on sequential methods for ordinary differential equations,

a large chapter on parallel linear algebra methods, 2 chapters on parallel

methods for odes including delay equations and partial differential equations

and 3 chapters on waveform relaxation techniques including one on the parallel

implementation of a waveform relaxation code.

The book can be read by third year and graduate students in the field of

computational science, mathematics or engineering and is aimed at the research

community in not only ordinary differential equations but scientific

computing in general.

More information on this book including the Preface and table of contents as

well as recent papes by K. Burrage on this subject and others can be found

via the WWW at the URL

http://www.maths.uq.oz.au/~kb

Kevin Burrage

Department of Mathematics

University of Queensland

Brisbane 4072, Australia

kb@maths.uq.oz.au

fax +61 07 3870 2272

phone +61 07 33653487

best wishes

Kevin Burrage

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

From: S. Areibi <areibi1@ksla.nl>

Date: 19 Jul 1995 11:05:04 +0200

**Subject: C Code for Shortest Path Problem**

Hi, I was wondering if anyone familiar with shortest path problems

(Dijkstra, Dial, etc.) could answer my following questions:

(1) What is the most effiecint implementation to find k-shortest path

that is available?

(2) Is there a cite (ftp www) that I can retrieve the code to experiment

with?

Thanks.

S. Areibi

areibi1@ksla.nl

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

From: Yin Zhang <yzhang@math.umbc.edu>

Date: Thu, 20 Jul 1995 12:20:29 -0400 (EDT)

**Subject: LIPSOL, MATLAB Linear Programming Package**

LIPSOL version 0.3

Release Announcement

July 20, 1995

LIPSOL is a MATLAB-based package for solving linear programs by

interior-Point methods. For computational efficiency it uses a

Fortran package by Esmond Ng and Barry Peyton at ORNL to solve

large sparse linear systems. LIPSOL has been tested on the Netlib

set of linear programs and has effectively solved all 95 Netlib

problems.

What's New?

In version 0.3, we have

(1) implemented a dense-column handling strategy;

(2) added rules for early termination on infeasible problems;

(3) added support for a new LPP (LP-Plain) format for LP input;

(4) included all source, thus making v0.3 highly portable;

(5) included numerous improvements and bug fixes over the

previous release -- version beta-2.2 (we have changed

the version numbering system).

Where to get it?

LIPSOL 0.3 distribution is a compressed-tar file: lipsol03.tar.gz.

To get it, please visit the LIPSOL home page on the Web:

http://math.umbc.edu/~yzhang/lipsol/

It is also retrievable by anonymous FTP from:

ftp.math.umbc.edu:pub/zhang/lipsol/v0.3/

LIPSOL is free software and comes with no warranty. All files written

by this author are copyrighted under the terms of the GNU General Public

License as published by the Free Software Foundation.

Yin Zhang http://math.umbc.edu/~yzhang/

Dept. of Mathematics and Statistics Email: yzhang@math.umbc.edu

Univ. of Maryland Baltimore County Phone: (410) 455--3298

Baltimore, Maryland 21228-5398, USA Fax : (410) 455--1066

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

From: Tomas Skalicky <skalicky@msmfs1.mw.tu-dresden.de>

Date: Thu, 20 Jul 95 20:19:40 +0200

**Subject: New Software Package for Sparse Linear Systems Available in WWW**

LASPack, a package for solving large sparse systems of linear equations

like those arising from discretization of partial differential equations,

is now available in WWW.

Main features:

- The primary aim of LASPack is the implementation of efficient iterative

methods for the solution of systems of linear equations. All routines and

data structures are optimized for effective usage of resources especially

with regard to large sparse matrices. The package can be accessed from

an application through a straightforward interface defined in the form

of procedure calls.

- Beside the obligatory Jacobi, succesive over-relaxation, Chebyshev, and

conjugate gradient solvers, LASPack contains selected state-of-the-art

algorithms which are commonly used for large sparse systems:

- CG-like methods for non-symmetric systems: CGN, GMRES, BiCG, QMR, CGS, and

BiCGStab,

- multilevel methods such as multigrid and conjugate gradient method

preconditioned by multigrid and BPX preconditioners.

All above solvers are applicable not only for the positive definite or

non-symmetric matrices, but are also adopted for singular systems

(e.g. arising from discretization of Neumann boundary value problems).

- The implementation is based on an object-oriented approach (although it

has been programmed in C). Vectors and matrices are defined as new data

types in connection with the corresponding supporting routines.

The basic operations are implemented so that they allow the programming

of linear algebra algorithms in a natural way.

- LASPack is extensible in a simple manner. An access to the internal

representation of vectors and matrices is not necessary and is, as required

of the object-oriented programming, avoided. This allows an improvement

of algorithms or a modification of data structures with no adjustment

of application programs using the package.

- LASPack is written in ANSI C and is thus largely portable.

The source code and the documentation of LASPack is available in WWW

at the following URLs:

- the distribution file

http://www.tu-dresden.de/mwism/skalicky/laspack-1.12.tar.Z

ftp://ftp.netlib.org/linalg/laspack-1.12.tar.Z

- the manual as HTML document

http://www.tu-dresden.de/mwism/skalicky/laspack/laspack.html

- the postscript version of the manual

http://www.tu-dresden.de/mwism/skalicky/laspack1.ps.Z

http://www.tu-dresden.de/mwism/skalicky/laspack2.ps.Z

You may also contact me by e-mail under skalicky@msmfs1.mw.tu-dresden.de.

Regards,

Tomas Skalicky

Dresden University of Technology

Institute for Fluid Mechanics

Mommsenstrasse 13

D-01062 Dresden

Germany

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

From: Jorge More' <more@mcs.anl.gov>

Date: Thu, 20 Jul 1995 15:48:13 -0500

**Subject: Richard Lehoucq is the 1995 J. H. Wilkinson Fellow**

Richard Lehoucq has been named recipient of the 1995 J. H. Wilkinson

Fellowship in Scientific Computing.

He will join the Mathematics and Computer Science (MCS) Division at

Argonne National Laboratory in September 1995.

Rich is the main developer of the current version of ARPACK.

This software, initially developed by Phuong Vu and

Danny Sorensen, is currently considered to be the best for solving

large-scale eigenvalue problems when storage is an issue.

Lehoucq received his Ph.D. in computational science and engineering from

Rice University in May 1995. His dissertation was concerned with an analysis

and implementation of an implicitly restarted Arnoldi iteration.

He has a strong background in numerical linear algebra, with an emphasis

on large-scale iterative methods. He also has extensive experience in

designing and implementing mathematical software on heterogeneous environments.

The Wilkinson Fellowship was created in memory of

James Hardy Wilkinson, F.R.S., who for many years acted as a

consultant and guiding spirit for such efforts as the EISPACK and

LINPACK projects. The fellowship is intended to assist a young

scientist who is actively engaged in state-of-the-art research in

scientific computing.

Jorge More'

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

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

Date: Sat, 22 Jul 1995 16:06:29 +0200 (METDST)

**Subject: Sven Hammarling is Visiting UNI*C, Denmark**

Sven Hammarling visiting UNI*C, Denmark

Dr. Sven Hammarling from Numerical Algorithms Group LTD in

Oxford, England is visiting UNI*C between July 24 and July 28, 1995.

We will install and test together the PVM NAG Library on the IBM SP2

and SGI Power Challenge computers.

Sven is one of the authors of the BLAS, BLACS, PBLAS, LAPACK

and ScaLAPACK packages. He has written many computational

numerical analysis (specially linear algebra) papers. Sven is one of

the designers of the NAG Library.

Jerzy Wasniewski

UNI*C, The Danish Computing Centre

for Research and Education

DTU, Bldg. 304, 2800 Lyngby, Denmark

Tel: + (45)45 883 999 after the tone 2426

Fax: + (45)45 930 220

Email: jerzy.wasniewski@uni-c.dk

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

From: Mike Boucher <mboucher@scisoft.com>

Date: Sat, 22 Jul 1995 11:43:21 -0600

**Subject: Newest Release of DSSLIB Available for SPARC**

The latest release of the scientific programming library DSSLIB is now

available. DSSLIB comprises optimized and parallelized versions of

BLAS 1-3, LAPACK, FFTPACK, VFFTPACK, and LINPACK. The new version

includes:

o Significantly higher speed across the board derived from higher serial

speeds for many core subroutines together with many more parallelized

subroutines.

o An interface that allows users of Rogue Wave's LAPACK.h++ to link

DSSLIB with their applications. This can boost performance by a

factor of 10 on single-CPU machines, and can give greater performance

on MP machines because of the parallelization built into DSSLIB.

o Native C interfaces to all of the subroutines. This allows users to

use C naming conventions (no underscore required), typical C calling

conventions such as passing constants by value rather than reference,

and it will handle workspace allocation.

For more information about DSSLIB, contact sales@scisoft.com.

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

From: Bill McKinney <mckinney@newton.math.ncsu.edu>

Date: Tue, 18 Jul 95 12:51:16 EDT

**Subject: Southeastern Atlantic Conference on Differential Equations**

SECOND ANNOUNCEMENT

THE FIFTEENTH ANNUAL

SOUTHEASTERN-ATLANTIC REGIONAL CONFERENCE

ON

DIFFERENTIAL EQUATIONS

Friday, October 13, 1995, 1:30pm -- Saturday, October 14, 1995, 5:30pm

North Carolina State University, Raleigh, NC

Principal Lecturers:

Christopher I. Byrnes, Washington University, title to be announced

Michael G. Crandall, University of California at Santa Barbara, On Fully

Nonlinear Elliptic Equations with Measurable Ingredients

Christine A. Shoemaker, Cornell University, Large Scale Nonlinear Optimal

Control of Systems Governed by Partial Differential Equations, with

Applications to Groundwater Remediation

On-Line Information:

The World-Wide Web site for the conference is

http://www2.ncsu.edu/math/Announcements/Searcde/

and searcde@math.ncsu.edu is the email address.

Registration:

Preregistration is advised and appreciated. For more information on

registration refer to one of the on-line addresses given above or

contact one of the conference organizers given at the end of this

announcement.

Contributed Talks:

If you want to present a 20 minute talk, please submit your title and

(brief) abstract by the deadline of September 1. You may submit your

title/abstract by email to searcde@math.ncsu.edu or by post with your

preregistration information.

For further information contact:

Ben Fitzpatrick (919) 515-7552, bfitz@math.ncsu.edu

Bill McKinney (919) 515-3362, mckinney@math.ncsu.edu

Michael Shearer (919) 515-3298, shearer@math.ncsu.edu

Department of Mathematics

North Carolina State University

Raleigh, NC 27695-8205

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

From: Trini Flores <flores@siam.org>

Date: Wed, 19 Jul 95 14:31:13 EST

**Subject: SIAM Conference on Discrete Mathematics**

Eighth SIAM Conference on Discrete Mathematics

Sponsored by SIAM Activity Group on Discrete Mathematics

June 17-20, 1996

The Johns Hopkins University, Baltimore, Maryland

Discrete mathematics is a relatively young branch of the

mathematical sciences, with a wide range of challenging research

problems and important applications in industry. It is a dynamic

and rapidly expanding field and is experiencing explosive growth

in both theory and applications. The conference seeks to bring

together participants from the many different environments where

discrete mathematics is developed and applied.

CONFERENCE THEMES

Discrete Mathematics (combinatorics, graph theory, ordered sets)

and its connections to other disciplines, including: Computer

Science, Biology, Optimization, and Physics.

MAIN TOPICS AND INVITED SPEAKERS

Computational Biology, Bonnie Berger; Silicon versus Carbon

Computers: Which is Fastest?, Richard J. Lipton; Combinatorial

Optimization, Laszlo Lovasz; Graph Theory, Paul D. Seymour;

Quantum Computing, Peter Shor; Convex Polytopes and Enumeration,

Rodica Simion; Graph Drawing, Roberto Tamassia; and Graph

Embedding, Carsten Thomassen.

MINISYMPOSIA

A number of minisymposia has been planned and invited by the

organizing committee to supplement the conference themes.

ORGANIZING COMMITTEE

Edward R. Scheinerman (Chair), Brian Alspach, Lars D. Andersen,

Graham Brightwell, Fan R.K. Chung, Derek D. Corneil, Lenore

Cowen, Michael Dillencourt, Michael Goodrich, Leslie Hall, Robin

Thomas, William T. Trotter, Douglas B. West, Peter M. Winkler,

and Jennifer Zito.

HOW TO CONTRIBUTE

Contributed presentations in lecture or poster format are

invited in all areas of discrete mathematics consistent with the

conference themes. Each contributor must submit a brief abstract

not exceeding 75 words long.

For those interested in organizing a minisymposium, prospective

minisymposium organizers must provide a session title, a

description not exceeding one-hundred words long, a list of four

speakers, and titles of speakers presentations.

Electronic submission is encouraged. Submit your abstracts and

minisymposium proposals via e-mail to: (meetings@siam.org). LaTeX

macros for submitting your abstracts are available and will be

sent to you upon request, or you can access the macros via

gopher.siam.org or http://www.siam.org

DATES TO REMEMBER

November 1, 1995: Deadline for submission of minisymposium

proposals.

December 1, 1995: Deadline for submission of contributed

abstracts.

ELECTRONIC ACCESS

Additional information regarding the conference can be accessed

in electronic format via SIAM's Gopher Server: gopher.siam.org or

through the World Wide Web: http://www.siam.org

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

From: Trini Flores <flores@siam.org>

Date: Fri, 21 Jul 95 11:36:36 EST

**Subject: SIAM Workshop on Computational Differentiation**

Second International Workshop on Computational Differentiation

February 12-15, 1996

La Fonda Hotel

Santa Fe, New Mexico

Conducted by SIAM in cooperation with the ACM Special Interest

Group on Numerical Mathematics (SIGNUM)

The Second International Workshop on Computational

Differentiation is intended to bring together researchers working

on constructive and accurate methods for differentiation and

their application to computational problems. The first meeting in

1991 in Breckenridge, Colorado, provided a forum for the diverse

group of researchers and formulated common themes and challenges.

Since then, significant progress has been made with respect to

speed, memory requirements, and user convenience of

differentiation tools. This workshop will assess these

developments in algorithmic design and software development and

their impact on applications to science and industry.

CONFERENCE THEMES

Differentiation Techniques

- Direct Differentiation with the Forward Mode

- Adjoint Programming and the Reverse Mode

- Combinatorial Aspects of the Chain Rule

- Hessians and Higher-order Derivatives

- Differential Algebras and Infinitesimals

- Error Estimation and Result Verification

- Nonsmoothness and Exceptions

Tools and Tradeoffs

- Tools for Fortran 77, Fortran 90, C, C++ and

other Languages

- Source Transformation and Operator Overloading

- Integration into Symbolic and Numerical Packages

- Modular Differentiation and Computational Paradigms

- Detection and Exploitation of Derivative Sparsity

- Derivative-Enabled Parallelism

Application Studies

- Design and Shape Optimization

- Data Assimilation and Inverse Problems

- Beam Physics

- Multibody Dynamics

- Process Control

INVITED SPEAKERS

(Partial list)

Stephen L. Campbell, North Carolina State University

Thomas F. Coleman, Cornell University

John M. Guckenheimer, Cornell University

Ulrich Kulisch, Technical University of Karlsruhe, Germany

Michael B. Monagan, Eidgenossische Technische Hochschule,

Switzerland

Olivier Talagrand, Laboratoire de Meteorologie Dynamique du CNRS,

France

ORGANIZING COMMITTEE

Martin Berz, Michigan State University (Chair)

Christian Bischof, Argonne National Laboratory

Andreas Griewank, Technical University of Dresden, Germany

HOW TO PARTICIPATE

The organizing committee invites submissions of

contributed abstracts for presentation either in a lecture or

poster format. Each contributor must submit an extended abstract

not more than one-page in length on 8-1/2" x 11" sheet.

Electronic submission is encouraged. Submit your one page-

abstract to meetings@siam.org.

DEADLINE FOR SUBMISSION OF CONTRIBUTED ABSTRACTS

Abstracts should reach the SIAM office on or before OCTOBER 2,

1995.

ELECTRONIC ACCESS

Up-to-date information about this workshop and all of SIAM's

upcoming conferences is available electronically by accessing the

World Wide Web at (http://www.siam.org).

SIAM

Society for Industrial and Applied Mathematics

3600 University City Science Center

Philadelphia, PA 19104-2688

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

From: Renato Spigler <spigler@ingle01.unile.it>

Date: Fri, 21 Jul 95 15:30:00 +0200

**Subject: Conference in Honor of Lax & Nirenberg**

An international conference, entitled "Advances in Partial Differential Equations

and Applications", dedicated to Peter D.Lax and to Louis Nirenberg on their 70th

Birthday, will be held in Venice (downtown), Italy, between June 10 and 15, 1996.

There will be 16 main lecturers (McLaughlin, Cercignani, Chorin, da Prato,

De Giorgi, Deift, Gallavotti, Klainerman, Levermore, P.L. Lions, Majda, Mosco,

Papanicolaou, Sanz-Serna, Tadmor, and Venakides), and a few possible conributed

papers. Some of the speakers are definitely numerical analysts.

To get more information, send a message to

venice96 at ulam.dmsa.unipd.it

and read the automatic reply.

In case you have special qiestions, contact

Professor Renato Spigler

c/o Dip. metodi e Modelli Matematici

per le Scienze Applicate,

Universita' di Padova

Via Belzoni 7

35131 Padova

Italy

e-mail spigler at kutta.dmsa.unipd.it

na.spigler at na-net.ornl.gov

spigler at ingle01.unile.it

fax

0039-49-8275.995

0039-832-320.410

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

From: T. N. Phillips <tnp@aber.ac.uk>

Date: Fri, 21 Jul 1995 09:11:44 +0100

**Subject: Position at University of Wales, Aberystwyth**

DEPARTMENT OF MATHEMATICS

UNIVERSITY OF WALES, ABERYSTWYTH

RESEARCH FELLOW

The Department of Mathematics has been awarded funding by the

EPSRC Mathematics Programme for a project concerned with

the settling of spherical particles in

viscoelastic fluids using a moving spectral element

method. The project will start on 1 December 1995

or possibly at a later date to be mutually agreed.

Applicants should hold, or expect to obtain in the near

future, a PhD in applied mathematics or engineering.

An ability to write numerical software would be an

advantage.

Applications should be made by sending a curriculum vitae and names

of two academic referees to Dr. T.N. Phillips, Department

of Mathematics, University of Wales, Aberystwyth SY23 3BZ.

Informal enquiries are welcomed either by phone

+44 1970 622769, FAX +44 1970 622777

or by email (tnp@aber.ac.uk).

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

End of NA Digest

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

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