NA Digest Sunday, February 25, 1996 Volume 96 : Issue 08

Today's Editor:

Cleve Moler

The MathWorks, Inc.

moler@mathworks.com

Today's Topics:
• NA Digest Editorial Policy
• Who Invented the Thomas Algorithm?
• ICIAM Proceedings Question
• A Triangular, Orthogonal Matrix Factorization
• Announcing the Sensational "wjat"
• Symposium on Finite Volumes for Complex Applications
• Computational Fluid Dynamics Workshop at Oxford
• Foundations of Computational Mathematics
• Structured Linear Systems -- Call for Papers
• Midwest Numerical Analysis Day
• PhD Scholarship at NTNU, Norway
• Postdoctoral Position at Argonne Laboratory
• Contents, Computational Optimization

Submissions for NA Digest:

Information about NA-NET:

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

From: Cleve Moler <moler@mathworks.com>
Date: Sat Feb 24 23:06:27 EST 1996
Subject: NA Digest Editorial Policy

This week's input queue contained six contributions that I felt were too
long and that I returned to their authors for editing. Last week's Digest
included three items that were corrections to earlier announcements that
I had damaged when I tried to edit them myself. So, it is again time to
remind everybody of the NA Digest editorial policy.

I try to keep each week's edition under 1000 lines of text. Please limit
individual contributions to a few dozen lines. If you have a longer
announcement, summarize it and include an e-mail, FTP or World Wide
Web address for the complete document.

For meeting announcements, most of our readers are not immediately interested
in the times for the coffee breaks or the special price at the local motel.
Please do not include a "fill in the blanks" registration form.

Announcements of relevant commercial products, like books or software, are
welcome, but please do not include details of price and payment methods.

The text should be ASCII characters, with at most 80 characters per line,
no tabs, Macintosh "special quotes" or other nonstandard characters. A
limited amount of Tex notation is certainly OK, but don't assume everybody
has a Tex viewer.

Contributions should be sent directly to:

na.digest@na-net.ornl.gov

Thanks for your support of the NA News Digest and for your brevity in future
contributions.

-- Cleve


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From: Cleve Moler <moler@mathworks.com>
Date: Sun Feb 25 10:44:20 EST 1996
Subject: Who Invented the Thomas Algorithm?

As I understand it, the "Thomas Algorithm" is another name for the use of
Gaussian elimination to solve tridiagonal systems of linear equations.
Is this correct? Who is Thomas? How did he get his name attached to
this algorithm?


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From: Marcin Paprzycki <PAPRZYCKI_M@utpb.edu>
Date: Mon, 19 Feb 1996 21:07:59 -0600 (CST)
Subject: ICIAM Proceedings Question

Dear Colleagues,

We would like to enquire if anyone who participated in the ICIAM'95
congress in Hamburg and has submitted a paper to the Proceedings has
heard anything from the ICIAM Organizers. We have submitted materials
for publication and have received no confirmation that our contributions
have been received. We have also tried to contact the ICIAM Organizers
over the e-mail and received no responses to our repeated messages.
We are ready to assume that this is our bad luck, but would like to confirm
this by asking those of you who have were more lucky then we were to
contact us and confirm our suspicion.

Respectfully,
Pierluigi Amodio, University of Bari
Luigi Brugnano, University of Florence
Marcin Paprzycki, University of Texas of the Permain Basin
Przemyslaw Stpiczynski, Maria Curie Sklodowska University


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From: Ken Turkowski <turk@apple.com>
Date: Tue, 20 Feb 1996 12:15:55 -0800
Subject: A Triangular, Orthogonal Matrix Factorization

I would like to factor a 3x3 matrix into the form:

         -1
M = U Q V

       | a b c |
U, V = | 0 d e |
       | 0 0 f |