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NA Digest   Friday, September 18, 1987   Volume 87 : Issue 71

This weeks Editor: Cleve Moler

Today's Topics:

                Deuflhard heads the Konrad Zuse Center
       June 1988 Linear Algebra Lecture Series at Johns Hopkins
  Bischof Awarded Wilkinson Fellowship in Computational Mathematics
      Pacific Northwest Numerical Analysis Seminar, September 26
                       Vector-radix 2D FFT code
                        Alliant User's Meeting

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Date:    Mon, 14 Sep 87 12:05 CET
To: na@score.stanford.edu
From: ZB6201%DB0ZIB21.BITNET@jade.berkeley.edu
Subject: Deuflhard heads the Konrad Zuse Center

Dear Colleagues,

This is a general letter to reach all those of you
that have not yet received my new address. After having
left the University of Heidelberg I have now a joint position
in Berlin both as full professor lecturing at the Free University
and as head of the newly founded Konrad Zuse Center.
The Konrad Zuse Center (in German: Konrad-Zuse-Zentrum
fuer Informationstechnik Berlin, abbreviation: ZIB) is intended to be
an institute for research and development in the general area
of scientific computing / computer science. Main topics
treated here are: Numerical Mathematics, Computer Graphics,
Software Development, Symbolic Computing, Systolic Arrays and
Algorithms, Distributed Systems and High Speed Networks. Of
course, this is certainly a challenging task for the future to come.
The emphasis of our research will be the development of
efficient algorithms and user oriented software essentially
for highly nonlinear systems, ordinary differential equations,
differential algebraic equations, parabolic and elliptic
partial differential equations. Technologically relevant
applications are envisaged.
As for the equipment, we run a CRAY X-MP/24 surrounded by
smaller computers from IBM, CDC, Siemens, VAX, and a series of
workstations. The use of our CRAY X-MP is shared with the two
Berlin Universities and a number of universities in Northern
West Germany.
We are presently establishing world-wide cooperation with
universities, research institutes, and industry. If you feel
curious enough to visit, please let me know. The two addresses
mentioned are:

Konrad Zuse Center
Heilbronner Strasse 10
D-1000 Berlin 31

and

Mathematical Institute III
Free University Berlin
Arnimallee 2-6
D-1000 Berlin 33

Best regards to all of you
Peter Deuflhard

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Date:     Mon, 14 Sep 87 14:06 EST
From: Roger Horn <MSC_HRAH%JHUVMS.BITNET@forsythe.stanford.edu>
Subject:  June 1988 Linear Algebra Lecture Series at Johns Hopkins
TO: NA@SCORE.STANFORD.EDU

      The Twelfth Mathematical Sciences Lecture Series and Conference

                    Department of Mathematical Sciences
                       The Johns Hopkins University
                        Baltimore, Maryland  21218

                       PROFESSOR ROBERT C. THOMPSON
                  University of California, Santa Barbara

                              will lecture on

                       MATRIX SPECTRAL INEQUALITIES

                             June 20-24, 1988

     The 1988 Johns Hopkins Mathematical Sciences Lecture Series and Con-
ference will be held during the week of June 20-24, 1988.  The principal
speaker will be Professor Robert C. Thompson of the University of Califor-
nia at Santa Barbara.  Professor Thompson's lectures will focus on inequal-
ities for eigenvalues, singular values, and invariant factors.  Applica-
tions in control theory and functional analysis will be mentioned.

     Professor Thompson will give ten lectures, two each day, on topics
such as:  eigenvalues of a sum of Hermitian matrices;  eigenvalues of a
product of unitary matrices;  eigenvalues and the exponential function;
eigenvalues and the Schubert calculus;  invariant factors of matrix pro-
ducts and sums;  invariant factors, eigenvalues, and representation
theory;  quaternions and invariant factors;  and other related topics.
Useful background for the lectures is in Chapter II of Gohberg & Krein's
Introduction to the Theory of Linear Nonselfadjoint Operators, American
Mathematical Society Translations, Vol. 18, 1969.

     The lecture series and conference are co-sponsored by the Department
of Mathematical Sciences and The Johns Hopkins University Press.  A mono-
graph by Professor Thompson derived from his lectures will be published by
the Press in the Johns Hopkins Series in the Mathematical Sciences.  An
earlier volume in the Series, Matrix Computations by Gene Golub and Charles
Van Loan, is well-known to the matrix theory and numerical analysis
community.

     Invited and contributed talks by participants will provide complemen-
tary material and variations on the theme of the lecture series.  Informal
interactions will be encouraged by small group discussions, sessions for
presentation and discussion of open problems, and social events.

     Participants will be selected from applicants from universities,
government, and industry.  Interested researchers and advanced graduate
students are cordially invited to apply to participate.  Applications for
travel and subsistence funds for participants have been made to several
granting agencies.  Inexpensive on-campus housing and meals will be
available.

     All participants are invited to contribute a paper related to the
theme of the lecture series.  These papers have been specially invited by
editors of the new SIAM journal Matrix Analysis and Applications.

     Potential participants are urged to contact the organizers now in
order to receive first priority for further information as it becomes
available.  Electronic mail is particularly convenient for this purpose.

     Professor Roger A. Horn or Professor Edward R. Scheinerman
     Department of Mathematical Sciences, The Johns Hopkins University,
     Baltimore, Md. 21218
     E-mail: MSC_HRAH@JHUVMS (Horn) or MSC_WERS@JHUNIX (Scheinerman)

     Applications to participate in the Series should be made in writing to
either of the organizers and should include a curriculum vitae and a brief
statement about one's background and interest in matrix analysis/linear
algebra if this is not already evident in the vitae.  Please include a
complete mailing address, telephone number, and E-mail address, if
available.  Graduate students should have a letter of recommendation sent
from their major professor.  All accepted applicants will receive a form to
request financial support, but there is no assurance that support will be
available.  Applications are welcome now, and must be received no later
than April 8, 1988 to ensure consideration for on-campus housing and
financial support.

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Date: Mon, 14 Sep 87 20:08:51 cdt
From: dongarra@anl-mcs.ARPA (Jack Dongarra)
To: na.dis@score.stanford.edu
Subject: Bischof Awarded Wilkinson Fellowship in Computational Mathematics

Wilkinson Fellowship in Computational Mathematics

We are pleased to announce the winner of the
James H. Wilkinson Fellowship in Computational Mathematics,
Christian Bischof from the Computer Science Department at
Cornell University.
The Wilkinson Fellowship is intended to  encourage  young  
scientists  who  are  actively  engaged in state-of-the-art 
research in computational mathematics.
Chris Bischof was selected out of some twenty outstanding
applicants in the field of computational mathematics.
Chris's research is in numerical linear algebra and
algorithms for high performance computers.
He will be joining the Mathematics and Computer Science
Division at Argonne National Laboratory in the summer of 1988.

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Date: Mon, 14 Sep 87 13:11:30 EDT
From: Randy LeVeque <rjl@entropy.ms.washington.edu>
To: na.moler@score.stanford.edu
Subject: Pacific Northwest Numerical Analysis Seminar, September 26

                         Pacific Northwest
                    Numerical Analysis Seminar

                   Saturday, September 26, 1987
                 Husky Union Building, Room 200ABC
                     University of Washington


     This regional Numerical Analysis meeting will bring together faculty, 
  students, industrial researchers and others in the Pacific Northwest 
  who share an interest in numerical analysis and scientific computing.
  (People from elsewhere are welcome too of course!) There is no registration 
  charge and no funds are available for supporting attendees.


                            SCHEDULE

       10:00 - 10:30  Welcoming coffee

       10:30 - 11:15  John Lewis, Boeing Computer Services
                      High performance sparse Cholesky

       11:15 - 12:00  Robert Higdon, Oregon State University
                      Absorbing boundary conditions for the wave equation

       12:00 - 1:30   Lunch

       1:30 - 2:15    Robert Russell, Simon Fraser University
                      Singularly perturbed ODEs

       2:15 - 3:00    Carl Pearson, University of Washington
                      Numerical methods for multiple integration

       3:00 - 3:30    Break

       3:30 - 4:15    David Watkins, Washington State University
                      The QR family of algorithms for the eigenvalue problem

       4:15 - 5:00    Uri Ascher, University of British Columbia
                      Differential-algebraic equations and applications in 
                           semiconductor device simulation

       5:30           Buffet dinner

  For more information please contact:

        Randy LeVeque                       (206) 543-7898
        Mathematics Department, GN-50       rjl@entropy.ms.washington.edu
        University of Washington
        Seattle, WA  98195

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Date: 15 Sep 87 01:40:17 GMT
From: chu@tcgould.tn.cornell.edu  (Clare Chu)
Subject: Vector-radix 2D FFT code
To: na@score.stanford.edu

Hi. Does anyone have a canned vector-radix 2D FFT code which
inputs a 2D array, or matrix and outputs the 2D FFT? This is
done by (decimating) splitting in the 2D directions. See
Blahut pp. 242-243 (Fast Algorithms for Digital Signal Processing)
and Rivard, G.E. "Direct fast Fourier transform of bivariate functions."
IEEE Trans. Acoust. Speech Signal Proc., vol. ASSP-25, no. 3,
pp. 250--252, June 1977.

Thanks a lot. I guess I could code it up myself, but I'm in a big
hurry trying to finish up my dissertation. You know how that goes.
In any case, I would really appreciate it if someone could either
send me the code, or point to where I can get it. I will fully
acknowledge the origin of the code and everything.

Thanks, Clare Chu

chu@amvax.tn.cornell.edu

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Date: Fri, 18 Sep 87 11:13:10 CDT
From: dongarra%dasher@anl-mcs.arpa (Jack Dongarra)
To: na.dis@score.stanford.edu
Subject: Alliant User's Meeting

The Alliant Users' Society, ALLUS, is holding its annual meeting
October 28 to 30, 1987 at the Royal Sonesta Hotel, New Orleans.
Gordon Bell will deliver the keynote address.  If you plan to 
attend the meeting, please make your hotel reservations immediately;
space is limited at the hotel.  If you need further information, call
ALLUS at (617) 486-1450.

Jack Dongarra

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End of NA Digest
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