Subject: NA Digest, Vol. 91, No. 5

From: [email-masked] (NA-NET)
Date: Sun, 3 Feb 91 00:47:18 -0500

Comment: Submissions for NA News Digest, mail to [email-masked].
Comment: Information about NA-NET, mail to [email-masked].
Comment: Comments about the NA-NET, mail to [email-masked].

NA Digest   Sunday, February 3, 1991   Volume 91 : Issue 5

Today's Editor: Cleve Moler

Today's Topics:

     New Book on Solving Linear Systems
     Cyclic Reduction Software
     Node Renumbering Schemes
     Financial Calculations
     SIAM Student Paper Competition
     Ninth Parallel Circus
     Multigrid Conference at George Washington University
     Second Annual Midwest NA Day
     Conference in Italy on Parallel Methods for ODEs
     SIAM Journal on Mathematical Analysis
     Position at University of Tulsa
     Position at Northern Illinois University
     Visiting Research Positions at RIACS

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

From: Jack Dongarra <[email-masked]>
Date: Mon, 28 Jan 91 11:19:56 -0500
Subject: New Book on Solving Linear Systems
 
We would like to announce the publication of ``Solving Linear
Systems on Vector and Shared Memory Computers'', written by
Jack Dongarra, Iain Duff, Danny Sorensen, and Henk van der Vorst.
It has 256 pages and is intended to provide a rapid introduction to the
world of vector and parallel processing for solving systems of linear
equations.  The book is under $20 for SIAM members and the royalties go
into a fund to support student attendance to SIAM meetings.
Please contact SIAM, 3600 University City Science Center,
Philadelphia, PA 19104-2688, 215-382-9800, FAX 215-386-7999.

Thanks,
Jack, Iain, Danny, and Henk

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

From: Steven Ashby <[email-masked]>
Date: Mon, 28 Jan 91 21:12:22 PST
Subject: Cyclic Reduction Software

Wanted: Cyclic Reduction Software

A colleague of mine wishes to obtain a FORTRAN implementation 
of cyclic reduction for a complex tridiagonal matrix.  Ideally,
the code should vectorize.  Please send your suggestions to
[email-masked].  Thanks in advance! 

-Steve Ashby

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

From: Chris Johnson <[email-masked]>
Date: Wed, 30 Jan 1991 15:12 MST
Subject: Node Renumbering Schemes

	I am in the process of hunting down node renumbering algorithms
for use with a three dimensional finite element program.  The matrix I must
solve is banded and symmetric and ranges in size from n = 25,000 to 
n = 100,000.  Due to the computational time and cost I would like to reduce
the bandwith to its optimal size.  Does anyone know of any better algorithms
(or faster) than the 1969 Cuthill and McKee paper?  

				Thanks,
				Chris Johnson
				[email-masked]

P.S. Optimized FORTRAN or C code
     would certainly be an
     added bonus!

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

From: Steve Sommars <[email-masked]>
Date: Fri, 1 Feb 91 12:00:22 EST
Subject: Financial Calculations

Financial calculations can give results which vary between
implementations (e.g., internal computations in decimal
versus floating point, rounding versus truncating).  This can lead
the situation where the corporate mainframe's results
differs by a few pennies from the PC's spreadsheet.  
Some institutions may be sensitive to this.  How
do people in ``the real world'' handle this?  

I asked David Hough about the topic & he responded:
>For instance, in mortgage and bond calculations, each financial
>institution adopts its own rules about rounding, so they're not
>consistent.  Beyond that I don't know much.  An inquiry 
>to numeric-interest [and to NA Net] might net you more info.

Here are some specific questions for numeric-interest folks:

1) Are there standards for financial calculations which
are as explicit about computations as IEEE-754 is for floating point?

2) What are the elementary operations in financial calculations?
Add, Subtract, Multiply to be sure.  Divide?  Net Present Value?
others?

3) Is David right?  Does this mean 9.75interest on a loan may be
computed differently by two banks (all other details being equal)?

4) Do users expect ``off by a few cents'' differences?  When is
a ``few cents'' too large?

5) Do any PC-based applications implement decimal arithmetic
for financial computations?

Steve Sommars
[email-masked]

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

From: SIAM <[email-masked]>
Date: Thu, 31 Jan 91 09:11 EDT
Subject: SIAM Student Paper Competition

                    SIAM Student Paper Competition

We are pleased to announce that the annual SIAM Student Paper Competition
will be held during the second International Conference on Industrial and
Applied Mathematics (ICIAM 91).  ICIAM 91 is jointly sponsored by five
international societies of applied and computational mathematicians -- GAMM
of the German-speaking countries, IMA of the United Kingdom, SIMAI of Italy,
SMAI of France, and SIAM.  SIAM is the conference host. 

Over 2,000 attendees are expected for this significant international event. 
The ICIAM Standing Committee is enthusiastic about having the SIAM Student
Paper Competition as part of ICIAM 91.

If you have a student or know of a student who should be included in the
competition, here are the details:
 
The student authors of the three best papers in applied and computational 
mathematics submitted to SIAM will be invited to attend ICIAM 91 in
Washington, DC, July 8-12.  Each winner must present his/her paper at the
conference and will receive up to $750 to offset expenses.  The winners will
be awarded a calligraphed certificate at a special prize ceremony at the
conference.  Papers must be singly authored to be eligible for consideration. 
To qualify, authors must be students in good standing who have not received
their PhDs at the time of submission.

In submitting their work for publication, authors are asked to consider the
SIAM journals. 

Submissions must be postmarked by no later than March 15, 1991.

Submissions can be sent by regular mail or fax.  Each submission must include
(1) an extended abstract (3-4 pages), double-spaced, in English; (2) the
signature of the author on the submission; (3) a statement by the student's
faculty advisor that the paper has been prepared by the author indicated and
that the author is a student in good standing; and (4) a short biography of
the student. 
 
Each submission must also include a letter of recommendation from the 
student's advisor or department chair.  Submissions will be judged on the
basis of originality, applicability, and clarity of exposition. 
 
The winners will be notified by May 24, 1991.

If you have any questions, please contact:

                  Allison Bogardo
                  SIAM
                  3600 University City Science Center
                  Philadelphia, PA 19104-2688
                  Telephone:  (215) 382-9800
                  E-mail to [email-masked] 
                  Fax to (215) 386-7999 

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

From: Omer Egecioglu <[email-masked]>
Date: Wed, 30 Jan 91 12:12:16 PST
Subject: Ninth Parallel Circus

                         SECOND ANNOUNCEMENT
                                of the
                        Ninth Parallel Circus

                 Location: Santa Barbara, California
                       Dates: March 22-23, 1991

     Continuing the  tradition  that  began  at  Yale  in  1986,   the
Department  of Computer  Science and the College of Engineering at the
University of California, Santa Barbara  will  be  hosting  the  Ninth
Parallel  Circus in Santa Barbara on Friday and Saturday, March 22-23,
1991.

     The Parallel  Circus  is an  informal  meeting  of  the numerical  
analysis  community  with  particular  emphasis on parallel algorithms 
for scientific computing.

     This is the second time that the Circus will be held on the  West
coast.  As with the previous Circuses, we hope  to  have  many  atten-
dees from the USA, Canada, and other countries.

     The circus is unique in that it is VERY informal, and thus allows
us  to  talk about the very latest results as well as interesting work
in progress.  In our previous meetings there has been lots of informal
discussion and a very  healthy  mix  of  industrial  and academic par-
ticipants.

     GRADUATE  STUDENTS  ARE  ESPECIALLY  WELCOME.

Organizers: Gene Golub, Omer Egecioglu, Mary Olson.

For further information please contact:

     Omer Egecioglu
     e-mail:   [email-masked]

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

From: Murli Gupta <[email-masked]>
Date: Wed, 30 Jan 91 09:36:57 EDT
Subject: Multigrid Conference at George Washington University

     Multigrid Conference at George Washington University
                   Revised Announcement
              Deadline Extended to March 15

The Conference

The George  Washington University  (Washington,  DC)    will
host an  NSF/CBMS Regional Research Conference  on Multigrid
and  Multilevel Adaptive  Methods  for Partial  Differential
Equations from June 24 to June 28, 1991.

The principal lecturer will be  Stephen F.  McCormick of the
University of Colorado at Denver who will deliver a sequence
10 one-hour lectures.  Demonstrations  and workshop sessions
will also be organized.  Additional lectures may be given by
the invited participants.

Participation is  open to  research scientists  and graduate
students involved in  activities that would profit  from the
lectures and the interaction this conference would provide.

PARTICIPATION  OF   GRADUATE  STUDENTS  AND   MINORITIES  IS
STRONGLY ENCOURAGED.

Accommodation

A  limited amount  of single  room  accommodations has  been
reserved in Adams  Hall,  which is on  the University campus
and  is  close  to  all campus  buildings. 

Support

A limited  amount of support  for travel and  subsistence is
available.   Applications  for  participation  and  possible
support should be made by  March 15,  1991.  To participate,
with or without support, please send a short vita and a list
of recent publications.

For further information, including an electronic conference
application form, contact the Conference Director:

  Professor Murli M. Gupta
  Department of Mathematics
  The George Washington University
  Washington, D.C. 20052
   Phone: 202-994-4857
     FAX: 202-994-0458
Bitnet address:    MMG@GWUVM
Internet address:  [email-masked]  or [email-masked]

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

From: Paul Saylor <[email-masked]>
Date: Thu, 31 Jan 91 14:05:16 -0600
Subject: Second Annual Midwest NA Day

                         FIRST ANNOUNCEMENT
                             for the 
                      2nd Annual Midwest NA Day    

Location: Urbana, IL 
Date:     Saturday, May 11 1991

The 2nd Annual Midwest NA Day is scheduled for Saturday, May 11 1991
on the University of Illinois, Urbana-Champaign campus. The first NA
Day was held in April of last year to take special note of the
retirement of Bill Gear from the University of Illinois.  This year,
the conference coincides with the May graduation ceremonies in which
Gene Golub is to receive an Honorary Doctorate from the University.

The first conference was well-attended (60-80 people) and invited
speakers included Gene Golub, Germund Dahlquist and Linda Petzold.
The informal atmosphere of the conference and the interesting variety
of talks made it a memorable event. We seek to continue this tradition
and, as before, participation from graduate students is especially
encouraged.  

More detailed conference information (call for speakers, schedule of
presentations, accommodations) will appear in a future NA News Digest.

Organizers: Michael Holst, Steven Lee, Faisal Saied, Paul Saylor, Ahmed 
Sameh and Bob Skeel.  

For inquiries, send e-mail to: [email-masked]
or call the organizers at (217) 333-6172.

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

From: A.Bellen <[email-masked]>
Date: Thu, 31 JAN 91 19:22 N
Subject: Conference in Italy on Parallel Methods for ODEs

       UNIVERSITA' DEGLI STUDI DI TRIESTE
       Dipartimento di Scienze Matematiche

             INTERNATIONAL CONFERENCE ON
PARALLEL METHODS FOR ORDINARY DIFFERENTIAL EQUATIONS
               THE STATE OF THE ART.
        (Grado) Italy  September 10-13, 1991

Organized by:
ALFREDO BELLEN  Department of Mathematical Sciences
                University of Trieste
MARINO ZENNARO  Department of Pure and Applied Mathematics
                University of L'Aquila

Invited Speakers:
K.BURRAGE (Auckland NZ)
I.GALLIGANI (Univ.Bologna I)
C.W.GEAR (NEC Princeton NJ, USA)
Z.JACKIEWICZ (Arizona State University USA)
P.J.van der HOUWEN (CWI Amsterdam NL)
O.NEVANLINNA (Univ.Helsinki SF)
S.P.NORSETT (NTH Trondheim N)
D.TRIGIANTE (Univ. Bari I)
M.ZENNARO (Univ. L'Aquila I)

The confernce is arranged as a Seminar-Workshop and will be devoted
to provide an exhaustive and updated overview of parallel numerical
methods for the solution of Ordinary Differential Equations.
There will be both invited lecturers and contributed talks.
According to the number of applications, the conference proceedings
will appear in some high level book series including invited and
contributed papers which will undergo the usual refereeing process.
During the conference some social activities are planned such as
excursions to the Grado Lagoon, visits to Roman ruins etc.

The registratrion fee for the meeting is $ 90 to be paid on arrival.
For further information contact:

A.Bellen
Dipartimento di Scienze Matematiche
Universita'
I-34100 TRIESTE, ITALY

e-mail address    [email-masked]
            or    [email-masked]

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

From: SIAM Publications Department <[email-masked]>
Date: Tue, 29 Jan 91 15:15 EDT
Subject: SIAM Journal on Mathematical Analysis
 
SIAM Journal on Mathematical Analysis 
 
May, 1991		Volume 22, Number 3 
 
CONTENTS 

    A Hyperbolic Theory for the Evolution of Plane Curves 
    Morton E. Gurtin and Paolo Podio-Guidugli 
 
    Blow-up Asymptotics for the Reactive-Euler Gas Model 
    Alberto Bressan 
 
    An Interior Discontinuity of a Nonlinear Elliptic-Hyperbolic System 
    Senhuei E. Chen and R. Bruce Kellogg 
 
    On the Obstacle Problem for Quasilinear Elliptic Equations
        of P Laplacian Type 
    Hi Jun Choe and John L. Lewis 
 
    Homogenization with Small Perforations of Increasingly Complicated Shapes 
    Alain Damlamian and Patrizia Donato 
 
    The Bifurcations of Countable Connections from a Twistred Heteroclinic Loop 
    Bo Deng 
 
    Layered Velocity Inversion: A Model Problem from Reflection Seismology 
    William Symes 
 
    Solutoion of the Inverse Scattewring Problem for the 3-D
        Schrodinger Equation Using a Fredholm Integral Equation 
    Tuncay Aktosun and Cornelis van der Mee 
 
    The Inverse Eigenvalue Problem with Finite Data 
    David C. Barnes 
 
    Half-Bound States and Levinson's Theorem for Discrete Systems 
    D. B. Hinton, M. Klaus, and J. K. Shaw 
 
    Conditions for Oscillation of Difference Equations with
        Applications to Equations with Piecewise Constant Arguments 
    I. Gyori, G. Ladas, and L. Pakula 
 
    Atkinson's Superlinear Oscillation Theorem for Matrix Difference Equations 
    Allan C. Peterson and Jerry Ridenhour 
 
    An Hm0 Interpolation Result 
    S. Jensen 
 
    An Extremal Problem Concerning a Markov-Type Inequality 
    P. Dorfler 
 
    Minimal Extrapolations of Filters 
    Benjamin B. Wells 

    Asymptotic Expansion of a Class of Fermoi-Dirac Integrals 
    J. Boersma and M. L. Glasser 
 
    Contiguity Relations of Aomoto-Gel'fand Hypergeometric Functions
        and Applications to Appell's System F3 and Goursat's System 3F2 
    Takeshi Sasaki 
 
    Mean Convergence of Expansions in Freud-Type Orthogonal Polynomials 
    H. N. Mhaskar and Y. Xu 
 
    Reproducing Formulas and Double Orthogonality in Bargmann
        and Bergman Spaces 
    Kristian Seip 
 
    Errata: Sur une classe de fonctionelles non convexes et applications 
    Rabah Tahraoui 

For additonal information regarding the SIAM Journal on
Mathematical Analysis, please contact Vickie Kearn, Publisher,
Society for Industrial and Applied Mathematics, 3600 University
City Science Center, Philadelphia, PA  19104-2688; telephone:
(215) 382-9800; fax: (215) 386-7999; e-mail: 
[email-masked].

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

From: J. C. Diaz <[email-masked]>
Date: Wed, 30 Jan 91 09:59:34 CST
Subject: Position at University of Tulsa

                  THE UNIVERSITY OF TULSA
                            DEAN
        College of Engineering and Applied Sciences

     The University of Tulsa is accepting  applications  and
encouraging nominations for the position of Dean of the Col-
lege of Engineering and Applied Sciences.  The University is
an   independent   comprehensive,   doctoral-degree-granting
research institution with approximately 3,200 undergraduate,
and  1,400  graduate and professional students.  The City of
Tulsa, located in the rolling Osage  Hills  of  northeastern
Oklahoma's  Green  Country,  is a pleasant urban center with
two major art museums, professional resident opera,  ballet,
symphony and theater companies.  It offers exceptional medi-
cal, recreational, and business  facilities,  and  serves  a
population of more than 500,000.

     The College of Engineering and  Applied  Sciences  con-
sists of eight departments: Chemical Engineering, Chemistry,
Electrical Engineering, Geosciences, Mathematical  and  Com-
puter  Sciences, Mechanical Engineering, Petroleum Engineer-
ing and Physics.  Its faculty  of  72  members  instructs  a
diversified  student body of 630.  College computing facili-
ties are linked to a campus-wide network that includes  dor-
mitories  and  libraries.   The College has strong ties with
regional  and   international   industry,   sharing   common
interests  in energy, information, materials, manufacturing,
the environment, and computing technology, and is well known
for its industrial consortia.

     The Dean of the College of Engineering and Applied Sci-
ences reports to the Provost of the University.  He/she will
assume a  leadership  role  in  the  academic  and  research
development  of  the college, should be a recognized scholar
with an earned doctorate in engineering,  the  applied  sci-
ences,  or  physical  sciences,  and should be familiar with
current research trends in these areas.  The successful can-
didate  must  have appropriate credentials to qualify at the
rank of full professor with continuing appointment  (tenure)
in  a  department  of  the College.  This individual must be
able to represent the diverse constituencies of the  College
and  to  strengthen its academic and research programs.  The
candidate should  possess  leadership  qualities  that  will
foster  constructive  relationships with other colleges, the
community, and industry.  Academic and significant  adminis-
trative  experience  is  required.   Salary  is competitive.
Additional information on job responsibilities and  qualifi-
cations will be sent on request.

     The position will  be  available  June  1,  1991.   The
Search   Committee   will   give   full   consideration   to
applications received by March 15, 1991;  however,  applica-
tions will be accepted until the position is filled.  Appli-
cations, nominations, and correspondence should be addressed
to:

                    Dale Teeters, Chair
                 EAS Dean Search Committee
                   Office of the Provost
                  The University of Tulsa
                  600 South College Avenue
                 Tulsa, Oklahoma 74104-3189

The University of Tulsa is a  Equal  Opportunity/Affirmative
Action Institution.

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

From: Biswa Datta <[email-masked]>
Date: Wed, 30 Jan 91 18:05:53 CST
Subject: Position at Northern Illinois University

             Computational Mathematics Position
                Northern Illinois University
             Department of Mathematical Sciences

Anticipated assistant professorship with a specialization in numerical partial
differential equations or optimization theory.  Ph.D. or equivalent and strong
potential in research and teaching required.  Application (vita) plus three
letters of reference and a description of research program should be sent to:

   Computational Math Position
   c/o Professor William D. Blair
   Chair,Department of Mathematical Sciences
   Northern Illinois University
   DeKalb,  IL 60115

by February 15, 1991.  EO/AAE.

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

From: Rich Sincovec <[email-masked]>
Date: Sat, 02 Feb 91 14:37:43 -0800
Subject: Visiting Research Positions at RIACS

      RESEARCH INSTITUTE FOR ADVANCED COMPUTER SCIENCE (RIACS)
                   NASA Ames Research Center
   
The Research Institute for Advanced Computer Science (RIACS) at the
NASA Ames Research Center, Moffett Field, California, is inviting
applications for visiting research appointments for the summer and for
periods up to two years at all levels from postdoctoral research
scientist to senior scientist.  Faculty on sabbatical and graduate
students seeking summer positions are also encouraged to apply.

Areas of interest are algorithms and software for parallel scientific
computation with applications to computational fluid dynamics,
parallel algorithms for sparse matrix problems, adaptive and
unstructured mesh methods for solving partial differential equations
the design and implementation of compilers and tools for parallel
computers, and pattern recognition and neural computing.

The computing environment at the NASA Ames Research Center in which
this research is conducted includes a 32,768 processor Connection
Machine (CM-2), an Intel iPSC/860 with 128 processors, a Cray Y-MP
with 8 processors and a Cray-2 with 4 processors.  The computing
environment also includes advanced graphics workstations.

Visitors to RIACS will be expected to be receptive to collaboration
with NASA scientists.  Additional opportunities for collaboration
abound, both within RIACS and at other institutions in the San
Francisco Bay area.

Applicants should send resumes and descriptions of proposed research
to:
	Dr. Richard Sincovec, Director
	RIACS
	Mail Stop Ellis
	NASA Ames Research Center
	Moffett Field, CA 94035.

Applications and inquiries may also be made via e-mail to
[email-masked].

RIACS is an Equal Opportunity Employer.

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

End of NA Digest
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