### Today's Editor:

- Cleve Moler
- The MathWorks, Inc.
- moler@mathworks.com

- Milton E. Rose
- Change of Address for Jim Pool
- Change of Address for Ilse Ipsen
- Change of Address for Marino Zennaro
- Change of Address for Bill Mitchell
- Well-posedness of "Almost Hyperbolic" Systems
- QMRPACK is Available from NETLIB
- Difficulties with IEEE Arithmetic, part 2
- F90 Test codes
- Re: SIAM Meetings
- Electronic Journal of Differential Equations (EJDE)
- New Book, Numerical Linear Algebra
- New Book, Introduction to Linear Algebra
- Cornelius Lanczos International Centenary Conference
- Scalable High Performance Computing Conference
- IFIP Conference on Programming Environments
- Symposium in Honor of Walter Gautschi
- Positions at University of Srathclyde
- SIAM Catalogs Available
- Contents: International Journal of Supercomputer Applications

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

From: Paul Saylor <saylor@icase.edu>

Date: Fri, 10 Sep 93 17:38:33 -0400

**Subject: Milton E. Rose**

Milton E. Rose died Sunday, August 22 in Lakewood, Colorado at age 68.

Milt retired as Director in 1985 from the Institute for Computer

Applications in Science and Engineering (ICASE). He had held

positions at the National Science Foundation and the Department of

Energy before his appointment at ICASE in 1977. Milt was known for his

work in partial differential equations, and recognized for his

leadership in the mathematical sciences.

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

From: J.C.T. Pool <jpool@king.mcs.drexel.edu>

Date: Wed, 8 Sep 1993 15:37:12 -0500

**Subject: Change of Address for Jim Pool**

Change of Address for Jim Pool, effective October 1, 1993

James C. T. Pool, Deputy Director

Caltech Concurrent Supercomputing Facility

California Institute of Technology, MS 158-79

Pasadena, CA 91125

Telephone: 818-395-6953

Fax: 818-584-5917

Email: pool@ccsf.caltech.edu

James C. T. Pool, Head Telephone: 215-895-2668

Mathematics & Computer Science Facsimile: 215-895-4999

Drexel University Internet: jpool@mcs.drexel.edu

Philadelphia, PA 19104-2884

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

From: Ilse Ipsen <ipsen@tjarko.math.ncsu.edu>

Date: Thu, 9 Sep 93 10:14:03 EDT

**Subject: Change of Address for Ilse Ipsen**

My new address is:

Ilse Ipsen

Department of Mathematics

North Carolina State University

Box 8205

Raleigh, NC 27695-8205, USA

(919) 515-3796

ipsen@math.ncsu.edu

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

From: Marino Zennaro <ZENNARO@univ.trieste.it>

Date: Thu, 9 Sep 1993 21:42:54 +0200 (WET-DST)

**Subject: Change of Address for Marino Zennaro**

I inform all colleagues that very soon I am moving from

the University of L'Aquila to the University of Trieste.

Therefore the mailing address to be used to send me

anything from now on is the following:

Marino Zennaro

Dipartimento di Scienze Matematiche

Universita' di Trieste

I-34100 Trieste, Italy

Since the two Univesities are quite far from each

other, any mail which might be sent to my previous

address in L'Aquila is likely to take a very long

time before I actually get it.

Also my e-mail address in L'Aquila

zennaro@vxscaq.aquila.infn.it

will be soon disabled.

My e-mail addresses are:

zennaro@univ.trieste.it

which is equivalent to

na.zennaro@na-net.ornl.gov

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

From: William Mitchell <mitchell@cam.nist.gov>

Date: Fri, 10 Sep 93 14:34:37 EDT

**Subject: Change of Address for Bill Mitchell**

Effective immediately, my address, etc., is:

William F. Mitchell

Bldg 101 Room A238

NIST

Gaithersburg, MD 20899-0001

office phone: (301) 975-3808

email: mitchell@cam.nist.gov

Friends can find additional address information from na.whois.

Bill Mitchell

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

From: John D. McCalpin <mccalpin@perelandra.cms.udel.edu>

Date: Wed, 8 Sep 1993 14:12:11 -0400 (EDT)

**Subject: Well-posedness of "Almost Hyperbolic" Systems**

In a variety of important subject areas, one drops time derivative terms

from a hyperbolic system as a result of scaling arguments. The resulting

systems are not hyperbolic and are rather tricky to analyze (e.g. Oliger

and Sundstrum, SIAM J. Appl. Math, 1978).

Does anyone know of any existence and uniqueness proofs for any

configurations of such systems (e.g. the hydrostatic equations)?

A very similar problem arises in the so-called "long-wave" models used in

nearshore ocean wave studies. These equations are essentially a

bi-directional version of the "Regularized Long-wave" equation, which, in

turn, is similar to the well-known KdV equation. The only proof I know of

in these areas is by Bona and Bryant, which shows that the RLW eq forms a

well-posed initial-boundary-value problem with one initial condition and

one boundary value. Unfortunately, since the RLW eq only has propagation

in one direction, the important issue of wave reflection is not addressed

by this proof.

Finally, by some judicious approximating, the long-wave equations can be

put into a form that might be called hyperbolic. That is, the system can

be written such that, in each equation, all derivatives are along a single

characteristic direction, but two of the characteristics are the same

(their eigenvalues are zero). The system is deficient by one eigenvector,

so it cannot be symmetrized. Has anyone out there worked with existence

and uniqueness proofs for a system with this property? I am especially

interested in the number and type of boundary conditions required, and

have already found a regime in which "open" boundary conditions cannot be

well-posed.

John D. McCalpin mccalpin@perelandra.cms.udel.edu

Assistant Professor mccalpin@brahms.udel.edu

College of Marine Studies, U. Del. John.McCalpin@mvs.udel.edu

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

From: Roland Freund <freund@research.att.com>

Date: Tue, 7 Sep 93 22:17 EDT

**Subject: QMRPACK is Available from NETLIB**

QMRPACK, a software package with FORTRAN-77 implementations of the QMR

method and variants thereof, is now available from NETLIB. The package

is distributed in the form of the compressed tar file "qmrpack.tar.Z" in

the "linalg" section of NETLIB. You can obtain QMRPACK by using xnetlib

or by anonymous ftp. In the latter case, ftp to "research.att.com" and

then get the file "qmrpack.tar.Z" from the directory "netlib/linalg".

QMR is a Lanczos-based Krylov subspace iteration for solving nonsingular

nonsymmetric systems of linear equations; it also works for certain

singular square systems. The two main features of QMR are (i) its

smooth convergence behavior due to the global quasi-minimal residual

property of its iterates, and (ii) the use of look-ahead techniques

to avoid breakdowns and near-breakdowns in the underlying Lanczos

algorithm.

The package provides two different implementations of QMR, one based

on three-term recurrences, and one based on coupled two-term recurrences.

Since several people find it desirable to have iterative methods

that require only a few lines of code, we have also included versions

of QMR without look-ahead. In particular, there is code for "QMR from BCG",

which generates QMR by simply adding one extra SAXPY to each BCG iteration.

However, in view of their enhanced stability, we recommend the use of

the "true" QMR methods with look-ahead. The package also contains a

no-look-ahead version of TFQMR, which is a transpose-free variant of QMR.

The package comes with two preconditioners: SSOR and a variant of

Youcef Saad's ILUT preconditioner. Finally, the package also includes

code for computing eigenvalues of nonsymmetric matrices, using the

look-ahead Lanczos algorithm.

At the moment, QMRPACK only contains single and double precision code

for real systems. In the near future, we will add codes for complex systems,

special variants of QMR for complex symmetric systems and symmetric indefinite

systems with symmetric indefinite preconditioners, and an implementation

of TFQMR with look-ahead. These additions to QMRPACK will be announced

on na-digest.

Enjoy,

Roland Freund and Noel Nachtigal

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

From: Joe Grcar <sepp@ca.sandia.gov>

Date: Thu, 09 Sep 93 19:16:46 -0700

**Subject: Difficulties with IEEE Arithmetic, part 2**

Here's another reality check for IEEE arithmetic fans. The

point of relating this story is: in my limited circle of R&D

professionals I've encountered two unsolicited complaints

about IEEE arithmetic in as many years. I suspect there are

many scientists and engineers who've said "gee, that's a

really stupid thing to do," but who haven't been heard by

anyone who understands the ramifications of the complaint.

A colleague with a PhD in mechanical engineering just walked

into may office and said:

"I like my new SGI Indigo, but I really don't like those NaN

things it has. I'm rewriting a piece of software and when I

looked at the output it was all full of NaN's. I found out

this means I'm dividing by zero somewhere, but where? I

liked the Vax a lot better because when it divided by zero it

would just stop. That made it easy to find mistakes. I've

spent all day in the debugger looking at NaN's trying to

figure out where they're coming from.

"Have you ever heard of this? Apparently the SGI is built so

it can add these NaN's together, and multiply and divide them

too, just like numbers. But that's a really stupid thing to

do, because they aren't numbers. Is there any way to add

something to not-a-number and get a-number?

(I said I didn't think so.)

"So what good are they? Why would anyone go through all this

trouble just to get output that nobody wants?

(So I said there is some way to turn off the NaN's. By

chance I once asked SGI technical support where to find

documentation on IEEE arithmetic. So I knew "man math"

mentions NaN's, but in fact, it has only happy talk and a

long list of "see also's". One of those, "man sigfpe,"

begins by discussing a struct called sigfpe_template. After

several pages of that, there is something about environmental

variables, but I doubt non-hackers get that far.)

Regards, Joe Grcar

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

From: L. M. Delves <delves@liverpool.ac.uk>

Date: Fri, 10 Sep 93 15:45:33 +0100 (BST)

**Subject: F90 Test codes**

Institute of Advanced Scientific Computation,

University of Liverpool

IASC is in the final stages of a collaborative project

(in fact, two separate projects) to develop:

1) A Fortran90 compiler, with parallel extensions for MIMD message-passing

architectures.

2) An HPF Fortran source-source translator: HPF => F90+PVM

These have been under development within two European-funded ESPRIT

projects: Supernode II, and PPPE (Portable Parallel Programming

Environments).

We are now seeking material to test these on; and expressions of interest

in the results of the projects.

Offers of test codes: email me, or send the codes via email to:

delves@liverpool.ac.uk

Expressions of interest: to the same address;

or write me at

Mike Delves

IASC

University of Liverpool

Liverpool, Meresyside, UK

or voice +44 51 794 4752;

or Fax +44 51 794 4754

All offers will be greatly appreciated.

We solicit also codes accompanied by performance data on other

F90 OR F77 compilers: please supply details of host configuration.

Our compiler is currently hosted on 386/486 under OS/2,

but implementations on Transputer T800/T9000, and on Sparc/Unix, are

following close behind.

Mike Delves

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

From: Arieh Iserles <A.Iserles@damtp.cambridge.ac.uk>

Date: Wed, 8 Sep 93 11:50:06 +0100 (BST)

**Subject: Re: SIAM Meetings**

In the last issue of na-net Rob Schreiber reacted briefly to Gene

Golub's recent complaint about the dedication of a session at a SIAM

meeting to a commercial product. The points raised by Gene are of

fundamental importance and their impact goes well beyond the

organization and scheduling of scientific meetings. Hence, I believe

that it is vital to discuss them and, specifically and without

rancour, to disagree with Rob's main premise.

It is true that scientists use commercial products in their research

and that the discussion of such tools is legitimate and, indeed,

occasionally helpful. This, however, is not the end of the story. Many

of us must have come across blatant commercialization of the (excuse

the high-sounding phrase) scientific enterprise:

* Thus, presentation and hard-sell of commercial products under the

guise of a bona fide scientific session. It is fair to say that

MathWorks Inc. (the Matlab people) have behaved, in my experience,

with an enviable integrity. Other vendors have less scruples and I have

witnessed my share of presentations that would not have `disgraced' a

television commercial (or television evangelism, for that matter).

* Thus, talks in scientific conferences that consist, to larger or

lesser degree, in overtly promoting a commercial product in which the

speaker has a pecuniary interest. How am I to believe the speaker that

the new algorithm is, indeed, superior to everything in sight, if the

boundary between the scientific and the commercial is blurred?

The statement that `FFT is faster than matrix multiplication' is

scientific and you can argue its merits on scholarly grounds. The

jingle `Donkin Donuts -- the best coffee in the world', however, is a

purely commercial hyperbole.

* Thus, the relatively new phenomenon of individuals (usually with

former university base) becoming software entrepreneurs. In principle,

this is a welcome development and the field of scientific software will

benefit from the influx of experienced, often brilliant, researchers.

The situation, however, is fraught with danger. Thus, assume that

Professor Bloggs, of great and well-deserved reputation, abandons a

university career to manufacture and market software based on her/his

latest algorithm to digitize differential widgets. Few years later, as

is in the nature of things, Dr Cloggs, a young postdoc at the other

end of the world, comes up with arguably superior (and completely

different) algorithm. However, Bloggs the entrepreneur is also Bloggs

the reputable scientist -- a referee, an editor, member of numerous

committees that decide on careers and budgets. How will Bloggs react

to a development that is likely to wipe out her/his new livelihood?

How will Cloggs trust in Bloggs's honesty?

Commercialization is with us and it cannot be wished away. We should

realize this and, as a community, take steps that allow us to

reconcile integrity with the new state of affairs. After all,

scientists, as human beings, are divided on a multitude of grounds --

national, political, religious... We belong to different scholarly

cultures and different affinity networks. So far, the `system' managed

to get it mostly right. How well, however, will it cope with

commercial pressures? To which extent will we be able to trust

speakers, papers, referee reports, grant-awarding agencies, if we know

the overwhelming commercial interest in the `outcome'? It is not just

a matter of individuals behaving with honesty and integrity -- and I

trust that most of them will -- but also of the recognition at the

receiving end that it is so.

Inasmuch as there are no simple answers, we should discuss this state

of affairs, with a view toward agreeing on a code of conduct that will

allow the numerical community to rip the benefits of commercial

developments without falling pray to their perils. This should not

interfere with the overwhelming majority of individuals trying to make

their livelihood from software or endeavouring to use it in their

research. To the contrary -- maintaining clear and acknowledged

standards should help many to reconcile commercial pressures with

scientific integrity and assist the numerical community as a whole in

trading commercial hype off for valuable information.

In the last decade or so universities in different parts of the world

have been coming under an increasing pressure from their paymasters to

behave as commercial organizations. This is a sad development with

immediate and severe dangers to the fabric of research and teaching.

The more we distinguish clearly and overtly between the commercial and

the scholarly, the better we should be able, as a community, to

recognize (and, hopefully, to resist) unwelcome pressures from

politicians who, in a memorable phrase, know the price of everything

but the value of nothing.

To return to the starting point and Rob's reaction to Gene's complaint

-- there is nothing wrong in discussing a software system at a

scientific meeting as long as there is a firm distinction between the

scholarly and the commercial part and as long as everybody knows

exactly what is what.

-- Arieh Iserles

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

From: Julio G. Dix <julio@ricardo.math.swt.edu>

Date: Wed, 8 Sep 1993 11:01:34 -0500

**Subject: Electronic Journal of Differential Equations (EJDE)**

ELECTRONIC JOURNAL OF DIFFERENTIAL EQUATIONS (EJDE)

Mathematicians at Southwest Texas State University and

at the University of North Texas have collaborated to

establish a new journal, the ELECTRONIC JOURNAL OF

DIFFERENTIAL EQUATIONS (EJDE). The EJDE will be a strictly

electronic journal dealing with all aspects of differential

equations. Articles will be submitted as TeX files, sent to

referees electronically, and then disseminated electronically,

free of charge.

Although the time between submission and dissemination

will be greatly reduced, only original research of high

quality will be accepted. Each article will be subject to as

rigid a peer review process as is applied by the finest of

today's printed journals. The EJDE is calling for papers

now. There are no page charges.

The EJDE can be accessed via ftp (login: ftp), gopher, and

telnet (login: ejde) to "ejde.math.swt.edu" or to

"ejde.math.unt.edu". Examples illustrating these options are:

1. "telnet ejde.math.swt.edu", login: "ejde" . (It may be

necessary to set your terminal to emulate a VT100.)

2. "telnet e-math.ams.com", login: "e-math", password: "e-math",

select "Mathematical Publications", then "Other Mathematical

Publications", and then "Electronic Journal of Differential

Equations".

3. "ftp ejde.math.swt.edu", login: "ftp", and "cd pub".

4. Provided that the gopher-client software is loaded on the

reader's computer."gopher ejde.math.unt.edu".

Readers can transfer the TeX and Postscript files to

their own computers and then read them or print hard copies.

A free subscription to the abstracts of new articles in

the EJDE is available by sending an e-mail message to

"subs@ejde.math.swt.edu". Suggestions and comments should be sent

to "editor@ejde.math.unt.edu" or to "editor@ejde.math.swt.edu".

Identical copies of the EJDE will be originated and

maintained at Southwest Texas State University and at the

University of North Texas. For posterity and for interlibrary

loan, a hard copy exists in the libraries at both institutions.

The Managing Editors of EJDE are Alfonso Castro, Julio

Dix, Gregory Passty, and Ricardo Torrejon. The Editorial

Board consists of

P. Bates (Brigham Young University)

A. Bloch (Ohio State University)

J. Bona (Pennsylvania State University)

K. J. Brown (Heriot-Watt University)

L. Caffarelli (Institute for Advanced Study)

C. Castillo-Chavez (Cornell)

C. Chui (Texas A & M University)

M. Crandall (University of California at Santa Barbara)

E. Di Benedetto (Northwestern University)

G. B. Ermentrout (University of Pittsburgh)

J. Escobar (Indiana University)

L. C. Evans (University of California at Berkeley)

J. Goldstein (Louisiana State University)

C. Groetsch (University of Cincinnati)

I. Herbst (University of Virginia)

C. Kenig (University of Chicago)

R. Kohn (Courant Institute)

A. Lazer (Miami University)

J. Neuberger (University of North Texas)

P. H. Rabinowitz (University of Wisconsin)

R. Shivaji (Mississippi State University)

R. Showalter (University of Texas)

H. Smith (Arizona State University)

P. Souganidis (University of Wisconsin)

N. Walkington (Carnegie-Mellon University)

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

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

Date: Wed, 8 Sep 93 19:56:55 EDT

**Subject: New Book, Numerical Linear Algebra**

NEW BOOK ANNOUNCEMENT

Title: Numerical Linear Algebra

Editors: L. Reichel, A. Ruttan and R.S. Varga

Publisher: W. de Gruyter, Berlin, 1993.

ISBN: 3-11-013784-4

About the Book:

On March 13-14, 1992, a meeting of the Western Pennsylvania and Eastern

Ohio Section of SIAM, with the title Numerical Linear Algebra and Scientific

Computing was held at Kent State University, Kent, Ohio.

In the short period of two days, the roughly 60 participants heard new

research results in Numerical Linear Algebra from acknowledged leaders in the

field. The talks displayed the present activity in this area of Numerical

Analysis and illustrated the wide diversity of the ongoing research.

Some of the topics covered in papers of the proceedings:

* Iterative methods for large linear systems of equations. Papers

present new variants of the QMR, GMRES and SOR methods.

* Preconditioning of linear systems of equations. Papers discuss block

circulant preconditioners with application to image restoration and the

use of the block-ADI iterative method for preconditioning.

* Generalized M-matrices and ultrametric matrices.

* Algorithms for eigenvalue problems. A new more stable variant of

Rutishauser's qd algorithm is presnted, as well as a divide-and-conquer

algorithm for the generalized symmetric tridiagonal eigenvalue problem.

* An algorithm of interest for the computation of the singular value

decomposition of products of matrices.

* Ill-posed problems in image resoration.

* Implementation of iterative methods on sequential and parallel computers.

Contributing authors:

A. Bojanczyk, C.F. Borges, D. Calvetti, M. Eiermann, K.V. Fernando,

R.W. Freund, W.B. Gragg, M. Hanke, S. Ma, R. Nabben, N.M. Nachtigal,

J. Nagy, B.N. Parlett, J. Petersen, R. Plemmons, L. Reichel, Y. Saad,

P. Van Dooren, R.S. Varga

Information on ordering:

For the USA, Canada and Mexico:

Walter de Gruyter,Inc.

200 Saw Mill Road

Hawthorne, NY 10532, U.S.A.

Phone (914) 747-0110

Telex 646677

Fax (914) 747-1326

Price: US $79.95

For other countries:

Walter de Gruyter & Co.

Postfach 303421

10728 Berlin

Germany

Phone +49-30-26005-161

Telex 184027

Fax +49-30-26005-222

Price: DM 168,-

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

From: Gil Strang <gs@BOURBAKI.MIT.EDU>

Date: Thu, 9 Sep 93 11:53:21 EDT

**Subject: New Book, Introduction to Linear Algebra**

Gil Strang's linear algebra text and MATLAB diskette

The new textbook Introduction to Linear Algebra is published by

Wellesley-Cambridge Press. The good way to obtain a copy is by email to

gs@math.mit.edu Chapters 1-6 are for the basic course in linear algebra.

The book ends with the SVD and FFT and matrix applications to networks

and computer graphics.

The accompanying MATLAB diskette (PC or Mac) will soon be available from

info@mathworks.com. It contains 25 Teaching Codes, each with an M-file of

examples and exercises written by Cleve Moler and Gil Strang. The Toolbox

also comes by anonymous ftp to ftp.mathworks.com in file pub/toolkits/Strang

or by email request to linalg@math.mit.edu

The text is widely adopted already this fall. It starts more gradually

than the earlier book Linear Algebra and Its Applications - and computing

gives students a way to work with matrices.

-- Gil Strang

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

From: Larry Norris <lkn@riemann.math.ncsu.edu>

Date: Fri, 10 Sep 93 17:01:56 EDT

**Subject: Cornelius Lanczos International Centenary Conference**

CORNELIUS LANCZOS INTERNATIONAL CENTENARY CONFERENCE

December 12-17,1993

North Carolina State University

Raleigh, NC, USA

To celebrate the 100th anniversary of the birth of

Cornelius Lanczos (1893-1974) , North Carolina State University

together with other sponsors will hold an international conference

from Sunday 12 December through Friday 17 December 1993. The

conference will reflect the wide interests of Cornelius Lanczos

in computational mathematics, theoretical physics, and astrophysics.

PROGRAM

The program of the conference includes approximately twenty-six

invited plenary speakers and twenty-five minisymposia which will

deal with the research topics listed below. The invited plenary

papers and the minisymposium papers will be published in the

proceedings of the conference. Also, the conference will include

sessions of contributed papers in the form of twelve minute talks

and poster sessions. The contributed talks and posters can be on

any topic in the areas of computational mathematics, theoretical

physics, and astrophysics.

SECOND CALL FOR PAPERS

The closing date for receiving abstracts for oral contributed and

poster papers for publication in the final program has been extended

to 1 October 1993. There is also a late paper deadline of 1 December,

1993, for both oral and poster papers. We cannot guarantee that

abstracts received after 1 October will be published in the final

program. However, we will publish abstracts of late papers in an

addendum to the final program which will be distributed with the

final program and other registration materials at the conference.

PLENARY SPEAKERS

********** Computational Mathematics **********

James W. Cooley Lanczos and the FFT:

A discovery before its time

Jane K. Cullum Lanczos algorithms for large scale nonsymmetric

and symmetric matrix eigenvalue computations

Roland W. Freund The Look-Ahead Lanczos Process for

Nonsymmetric Matrices and Its Applications

Gene H. Golub Uses & Abuses of the Lanczos Algorithm

Anne Greenbaum The Lanczos and Conjugate Gradient

Algorithms in Finite Precision Arithmetic

Martin H. Gutknecht The Lanczos Process and Pade Approximation

Eduardo L. Ortiz The Tau Method of Lanczos and Related

Numerical Methods for Differential Equations

Chris Paige Solving equations and computing eigencomponents

via the Lanczos process

Beresford Parlett Do we fully understand the symmetric

Lanczos algorithm yet?

Robert J. Plemmons Some Matrix Computations in Adaptive Optics

Pal Rozsa On Generalized Band Matrices and Their Inverses

Youcef Saad Theoretical Error Bounds and General Analysis of

a Few Lanczos Algorithms

G. W. Stewart Lanczos and Linear Systems

John Todd Reminiscences of Cornelius Lanczos

********** Theoretical Physics & Astrophysics **********

V. I. Arnold (to be confirmed)

James B. Hartle The Classical Domain in a Quantum Universe

Christopher Isham Quantum Gravity: What Are We Doing?

Jerrold Marsden Some New Perspectives on Variational

Principles in Mechanics

Roger Penrose Relativity, Quantum Theory, and Computation

Tsvi Piran Neutron Star Mergers and Gamma-Ray Bursts,

Possibly the Strongest Explosions in the Universe

John J. Stachel Lanczos's Contributions to General Relativity

Yasushi Takahashi Four Dimensional Vector and the Gauge Transformation

Claudio Teitelboim Black Hole Entropy and Dimensional Continuation

Kip S. Thorne Gravitational Waves: Challenges, Plans and Prospects

Michael S. Turner The Remarkable Success Story of the Big Bang Cosmology

John A. Wheeler

James W. York Black Holes In Thermal Equilibrium

MINISYMPOSIA

Computational Mathematics:

M. Berry Software for Lanczos-based Algorithms

A. Bjorck Least Squares

Dan Boley Control Applications

D. Calvetti Moments in Numerical Analysis

M.T. Chu & John Lewis Eigenvalue Computations

C. K. Chui Wavelets

J. Cooley Development of the FFT

E. Ortiz Tau Method and Chebyshev Polynomials

R.J. Plemmons The FFT in Signal Processing

H. Van der Vorst Iterative Methods for Linear Systems

Theoretical Physics & Astrophysics:

Paul Anderson Black Hole Evaporation and Thermodynamics

J. Blondin & J. Stone Computational Magnetohydrodynamics in Astrophysics

A. Kashlinsky Galaxy Formation and Large-Scale Structure of the Universe

M. Scholer & D. Winske Numerical Simulations of Collisionless Space Plasmas

C.M. Will Detection of Gravitational Radiation from Astrophysical

Sources

J. Isenberg Cauchy Problem of General Relativity

D. Garfinkle Cosmic Censorship

P. Dolan & A.H. Taub Lanczos H-tensor

M. J. Gotay & P. Olver Symplectic Methods in Physics

K.V. Kuchar The Problem of Time in Quantum Gravity

J.J. Halliwell Decoherence and the Foundations of Quantum Mechanics

T. Ratiu & T. Bloch Geometric Mechanics

L. Smolin New Variables and Loop Quantization

P.H. Frampton,

T.W. Kephart & M. Sher Supercollider Physics

C. Carlson

& A. Szczepaniak Open Questions in Particle Theory

FURTHER INFORMATION

A first circular was sent out in late Fall, 1992, through the SIAM,

APS and GRG mailing lists. A second circular giving details about the

program and related information was distributed in early June, 1993.

If you wish to receive a copy of the second circular, or wish to receive

the preliminary program (scheduled for mailing in early October) please

write to:

Cornelius Lanczos International Centenary

Conference, Attn: Sheehan/Heggie,

NCSU/OCE&PD, Box 7401, Raleigh, NC, 27695-7401, USA

or contact through e-mail:

lanczos@math.ncsu.edu.

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

From: Jack Dongarra <dongarra@cs.utk.edu>

Date: Sat, 11 Sep 93 09:53:34 -0400

**Subject: Scalable High Performance Computing Conference**

PRELIMINARY ANNOUNCEMENT

THE 1994 SCALABLE HIGH PERFORMANCE COMPUTING CONFERENCE

SHPCC94

Knoxville, Tennessee

May 23 - 25, 1994

ORGANIZING INSTITUTIONS

University of Tennessee

Oak Ridge National Laboratory

Sponsored by

IEEE Computer Society

GENERAL CHAIR PROGRAM CHAIR

Jack Dongarra David W. Walker

PROGRAM COMMITTEE:

David Bailey Paul Pierce

William Gropp Sanjay Ranka

Rolf Hempel Gary Sabot

Anthony Hey Robert Schreiber

Charles Koelbel Bernard Tourancheau

Steve Otto Robert van de Geijn

Cherri Pancake Katherine Yelick

SPECIAL FEATURES:

Tutorials Published Proceedings

INVITED SPEAKERS:

Guy Blelloch, Carnegie Mellon University

Phil Colella, University of California, Berkeley

David Culler, University of California, Berkeley

Monica Lam, Stanford University

Marc Snir, IBM T.J. Watson Research Center

TOPICS OF INTEREST:

Architectures Load Balancing

Artificial Intelligence Linear Algebra

Compilers Neural Networks

Concurrent Languages Non-numerical Algorithms

Fault Tolerance Operating Systems

Image Processing Programming Environments

Large-scale Applications Scalable Libraries

C++

CONFERENCE DEADLINES:

Extended Abstracts November 1, 1993

Abstracts of posters November 1, 1993

Notified of acceptance January 14, 1994

Camera-ready copy of paper February 14, 1994

Lodging Reservations March 1, 1994

Early Registration March 1, 1994

More detailed questions can be sent to:

walker@msr.epm.ornl.gov

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

From: Karsten M. Decker <decker@serd.cscs.ch>

Date: Sun, 12 Sep 93 15:45:04 +0200

**Subject: IFIP Conference on Programming Environments**

CALL FOR PAPERS

IFIP WG10.3

WORKING CONFERENCE ON

PROGRAMMING ENVIRONMENTS FOR

MASSIVELY PARALLEL DISTRIBUTED SYSTEMS

April 25 - 30, 1994

Monte Verita, Ascona, Switzerland

Massively parallel systems with distributed resources will play a very

important role for the future of high performance computing. One of

the current obstacles of these systems is their difficult programming.

The proposed conference will bring together active researchers who are

working on ways how to help programmers to exploit the performance

potential of massively parallel systems. The working conference will

consist of sessions for full and short papers, interleaved with poster

and demonstration sessions.

The Conference will be held April 25 - 30, 1994 at the Centro Stefano

Franscini, located in the hills above Ascona at Lago Maggiore, in the

southern part of Switzerland. It is organized by the Swiss Scientific

Computing Center CSCS ETH Zurich. The conference is the forthcoming

event of the working group WG 10.3 of the International Federation for

Information Processing (IFIP) on Programming Environments for Parallel

Computing. The conference succeeds the 1992 Edinburgh conference on

Programming Environments for Parallel Computing.

SUBMISSION OF PAPERS

Submission of papers is invited in the following areas:

-- Programming models for parallel distributed computing

-- Computational models for parallel distributed computing

-- Program transformation tools

-- Concepts and tools for the design of parallel distributed algorithms

-- Reusability in parallel distributed programming

-- Concepts and tools for debugging massively parallel

systems (100+ processing nodes)

-- Concepts and tools for performance monitoring of massively

parallel systems (100+ processing nodes)

-- Tools for application development on massively parallel systems

-- Support for computational scientists: what do they really need ?

-- Application libraries (e.g., BLAS, etc.) for parallel distributed

systems: what do they really offer ?

-- Problem solving environments for parallel distributed programming

Authors are invited to submit complete, original, papers reflecting

their current research results. All submitted papers will be refereed

for quality and originality. The program committee reserves the right

to accept a submission as a long, short, or poster presentation paper.

Manuscripts should be double spaced, should include an abstract, and

should be limited to 5000 words (20 double spaced pages); The contact

authors are requested to list e-mail addresses if available. Fax or

electronic submissions will not be considered.

Please submit 5 copies of the complete paper to the following address:

PD Dr. Karsten M. Decker

IFIP 94

CSCS-ETH Zurich

Via Cantonale

CH-6928 Manno

Switzerland

IMPORTANT DATES

Deadline for submission: December 1, 1993

Notification of acceptance: February 1, 1994

Final versions: March 1, 1994

CONFERENCE CHAIR

Karsten M. Decker

CSCS-ETH Zurich

Via Cantonale

CH-6928 Manno

Switzerland

phone: +41 (91) 50 8233

fax: +41 (91) 50 6711

e-mail: decker@serd.cscs.ch

For more information, send email to ifip94@cscs.ch

== Karsten M. Decker

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

From: Ray Zahar <zahar@iro.umontreal.ca>

Date: Mon, 13 Sep 93 03:44:18 EDT

**Subject: Symposium in Honor of Walter Gautschi**

In recognition of Walter Gautschi's contributions to mathematics

and computer science, and to celebrate his sixty-fifth birthday, a

conference is to be held in his honor:

International Symposium

on

Special Functions, Approximation,

Numerical Quadrature and Orthogonal Polynomials

Celebrating the Sixty-Fifth Birthday

of

Walter Gautschi

SPONSOR: Purdue University

DATES: The conference begins at 2:00pm on December 2, and

continues until the evening of December 4, 1993

LOCATION: Purdue Memorial Union

Purdue University

West Lafayette, Indiana

U.S.A. 47907

SPEAKERS: The program is comprised of invited talks on the four main

themes of the conference:

ONE-HOUR SPEAKERS: R.A. Askey, E.W. Cheney, G. Dahlquist, G.H. Golub

W.B. Gragg, J. Korevaar, J.N. Lyness, F.W.J. Olver, R.S. Varga

HALF-HOUR SPEAKERS: A. Bellen, J.C. Butcher, J.R. Cash, P.J. Davis,

C. de Boor, B.D. Flury, D. Gottlieb, M.H. Gutknecht, A. Iserles,

W.B. Jones, H.J. Landau, S. Li, G. Mastroianni, C.A. Micchelli,

G.V. Milovanovic, G. Monegato, M.E. Muldoon, S.E. Notaris,

L. Reichel, W.C. Rheinboldt, T.J. Rivlin, S. Ruscheweyh,

E. Saff, F. Stenger, N.M. Temme, J. Wimp, R. Wong, M. Zhang

PUBLICATION: Proceedings of the conference will be published in

book form. Participants (other than the invited speakers)

are invited to contribute articles to the refereed proceedings.

The final date for submission of papers is December 5, 1993.

ABSTRACTS: All abstracts should be sent by October 15, 1993 to

the e-mail address:

icsfaq@iro.umontreal.ca

or to:

Professor R.V.M. Zahar

Departement d'IRO

Universite de Montreal

C.P. 6128, Succ. "A"

Montreal, Quebec

CANADA H3C 3J7

Tel: (514) 343-7481

FURTHER INFORMATION: Details on registration, accommodation and travel

as well as updated information on the talks, can be obtained

via anonymous ftp at:

address: ftp.iro.umontreal.ca

directory: pub/numerik/Gautschi_Symposium

filename: Gautschi_Symposium

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

From: D. Sloan <caas10@ccsun.strath.ac.uk>

Date: Thu, 9 Sep 93 17:41:15 +0100 (BST)

**Subject: Positions at University of Srathclyde**

UNIVERSITY OF STRATHCLYDE

DEPARTMENT OF MATHEMATICS

The University of Srathclyde, Glasgow, invites applications for two new

appointments in the Department of Mathematics--

1. Lectureship/Senior Lectureship in Continuum Mechanics (Ref 84/93)

Candidates should have research experience in continuum mechanics and

preferably in anisotropic fluids. The successful candidate will strengthen

research and teaching in continuum mechanics. An exceptionally well-qualified

candidate may be offered appointment at Senior Lectureship level.

Salary:- up to 29,788 pounds per annum.

2. Lectureship in Nonlinear Analysis (Ref 82/93)

Candidates should have research experience in nonlinear analysis and

preferably in nonlinear dynamical systems. The successful candidate is

expected to straddle current departmental research interests in applied

analysis and numerical analysis. Salary:- 13,601 - 25,107 pounds per annum.

For application form and further particulars (please quote reference number)

contact the Personnel Office, University of Strathclyde, Glasgow, G1 1XQ.

Applications closing date:- 13th October 1993.

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

From: SIAM <jones@siam.org>

Date: Thu, 09 Sep 93 14:39:29 EST

**Subject: SIAM Catalogs Available**

CATALOGS AVAILABLE

The SIAM 93-94 Publications Catalog is available upon request.

It includes descriptions of all SIAM books in print.

The SIAM 1994 Periodicals Catalog is also available and includes

SIAM journal descriptions and editorial boards.

Catalog requests should be sent to:

service@siam.org

Please specify which catalog(s) you are interested in recieving.

SIAM* 3600 Science Center* Philadelphia, PA* 19104* USA

215-382-9800* FAX 215-386-7999

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

From: Jack Dongarra <dongarra@cs.utk.edu>

Date: Fri, 10 Sep 93 08:21:27 -0400

**Subject: Contents: International Journal of Supercomputer Applications**

International Journal of Supercomputer Applications

Volume 7.3 Fall 1993 Anna Nagurney, Guest Editor

Special Issue on Computational Ecomonics

Simulating Normal Rectangle Probabilities and Their Derivatives:

The Effects of Vectorization

Vassilis Hajivassiliou

A Globally Convex Agricultural Production System: Parameter Estimation

Agapi Somwaru and Kenneth Hanson

Econometric Model Simulation on Parallel Computers

Manfred Gilli and Giorgio Pauletto

A Numerical Solution Algorithm for Solving Models with Incomplete Markets

ayse Imrohoroglu, Selahattin Imrohoroglu, and Douglas Joines

Forward Looking Behavior and Learning in Stochastic Control

Hans Amman and David Kendrick

Computational Issues in the Statistical Design and Analysis of Experimental

Games

Mahmoud El-Gamal, Richard McKelvey, and Thomas Palfrey

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

End of NA Digest

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