Subject: NA Digest, V. 94, # 3 NA Digest Monday, January 17, 1994 Volume 94 : Issue 3 Today's Editor: Cleve Moler The MathWorks, Inc. moler@mathworks.com Today's Topics: Best Sphere Fitting Code for Boundary Element Methods Help with Maxwell Equations Parallel Iterative Methods Package Workshop on Parallel Scientific Computing in Denmark Southeastern Atlantic SIAM Meeting SIAM Symposium on Control Problems in Industry Deadline, SIAM Annual Meeting CACSD'94: Final Program Position at Columbia University Position at Maui High Performance Computing Center Chair of Applied Mathematics at Bath University Contents: Linear Algebra and its Applications Contents: SIAM Mathematical Analysis Submissions for NA Digest: Mail to na.digest@na-net.ornl.gov. Information about NA-NET: Mail to na.help@na-net.ornl.gov. ------------------------------------------------------- From: Helen Ruddy Date: Mon, 10 Jan 94 12:19:24 EST Subject: Best Sphere Fitting Hi, Does anyone know which algorithm(s) I can use to fit the "best" sphere to a set of 3-D coodinates. In this case I have a set of electrode coordinates on a head (scalp) and wish to find the best sphere through them. Apologies if this is a very simple/well known problem and solution. Thanks in advance Helen Ruddy (email: har@biomed.queensu.ca) ------------------------------ From: Mark Poole Date: Tue, 11 Jan 94 09:47 +0100 (BST) Subject: Code for Boundary Element Methods I am searching for computer code, preferably in FORTRAN, that uses the boundary element method to solve Laplace's equation on a 3-D domain, using, as a preference, simple constant quadrilateral elements. Any help relating to any aspect of the above problem would be greatly appreciated. Many thanks in advance, Mark Poole. ------------------------------ From: Sean Washburn Date: Thu, 13 Jan 94 13:12:02 EST Subject: Help with Maxwell Equations I am trying to model the response of the Maxwell equations (separable, partial diffferential equations) in three dimensions, to driving terms of arbitrary spatial configuration (confined to a plane) along one edge of the system. It would be very convenient to have a package written to do this that cost nothing, but I would be grateful for any help. Thanks, Sean Washburn ------------------------------ From: Rudnei Dias da Cunha Date: Tue, 11 Jan 1994 12:04:46 +0000 Subject: Parallel Iterative Methods Package We would like to announce the availability of the Parallel Iterative Methods (PIM) package. PIM is a collection of Fortran routines designed to solve systems of linear equations (SLEs) on parallel computers using iterative methods. PIM offers a number of iterative methods, including - Conjugate-Gradients (CG), - Bi-Conjugate-Gradients (Bi-CG), - Conjugate-Gradients squared (CGS), - The stabilised version of Bi-Conjugate-Gradients (Bi-CGSTAB), - Generalised minimal residual (GMRES), - Generalised conjugate residual (GCR), - Conjugate-Gradients for normal equations with minimisation of the residual norm (CGNR), - Conjugate-Gradients for normal equations with minimisation of the error norm (CGNE), and - Transpose-free quasi-minimal residual (TFQMR). The routines allow the use of preconditioners; the user may choose to use left-, right- or symmetric-preconditioning. Several stopping criteria can also be chosen. PIM has been tested on networks of workstations using PVM 3.1, p4 1.2, TCGMSG 4.02, on the Intel Paragon using the NX library and on the Cray Y-MP2E/233. HOW TO GET IT It is available via anonymous ftp at unix.hensa.ac.uk (129.12.21.7) in the file misc/netlib/pim/pim.tar.Z This file contains the source codes for PIM, the example programs and the user's guide in PostScript format. The user's guide is also available separately as Internal Report 2-94 of the Computing Laboratory, UKC in the file misc/ukc.reports/comp.sci/reports/2-94.Z COMMENTS/SUGGESTIONS The authors can be contacted via e-mail at either rdd@ukc.ac.uk or trh@ukc.ac.uk. Rudnei Dias da Cunha Centro de Processamento de Dados, Universidade Federal do Rio Grande do Sul, Brasil Computing Laboratory, University of Kent at Canterbury, United Kingdom Tim Hopkins Computing Laboratory, University of Kent at Canterbury, United Kingdom ------------------------------ From: Jerzy Wasniewski Date: Tue, 11 Jan 1994 13:54:54 +0100 (MET) Subject: Workshop on Parallel Scientific Computing in Denmark FIRST ANNOUNCEMENT CALL FOR PAPERS WORKSHOP ON PARALLEL SCIENTIFIC COMPUTING organised by: UNI*C (The Danish Computing Centre for Research and Education), IMM (The Institute for Mathematical Modelling of the Technical University of Denmark) and Jack Dongarra Dates: June 20, 1994 - Tutorial on heterogeneous network computing June 21 - 23, 1994 - Workshop sessions Place: UNI*C, The Danish Computing Centre for Research and Education, The Technical University of Denmark, Bldg. 304, 2800 Lyngby, DENMARK Recent results on efficient and fast methods for high speed computers will be discussed at this workshop. The use of these methods in connection with big application packages will also be treated. Finally, the use of scalable libraries will be of particular interest. The workshop will be preceeded by a one-day tutorial devoted to tools for heterogeneous network computing, where Jack Dongarra will be the main lecturer. The main purpose of this workshop is to bring together scientists working with large computational problems and specialists in the field of parallel methods and efficient exploitation of modern high-speed computers. Some classes of numerical methods appear again and again during the numerical treatment of many problems in different fields of science and engineering. The aim of this workshop is to select some of these numerical methods and plan further experiments on several types of parallel computers. The key lectures will show an overview of different parallel and vector computers. They will review the most important numerical algorithms and scientific applications on parallel computers. Some of the key speakers are: Jack Dongarra, Tennessee University, USA Iain Duff, Rutherford Appleton Laboratory, England Len Freeman, University of Manchester, England Al Geist, Oak Ridge National Laboratory, USA Svend Hammarling, Numerical Algorithms Group, England Per Christian Hansen, The Danish Computing Centre, Denmark Bill Harrod, Cray Research, USA Axel Hunding, University of Copenhagen, Denmark Kaj Madsen, Technical University of Denmark, Denmark John Perram, University of Odense, Denmark Robert Schreiber, NASA, USA Stig Skelboe, The Danish Computing Centre, Denmark Zahari Zlatev, The Air Pollution Department, Denmark A limited number of contributed 20 min. talks will be selected for the workshop. Poster sessions will also be organised. Potential contributors should notice the following deadlines. Abstracts no more than one A4 page (talks and posters) by April 30, 1994. Papers between 5 and 10 pages for conference proceedings by May 15, 1994. A program with the key lectures will be announced in NA-NET as early as possible. A program with the talks at the workshop will be sent to the participants in the beginning of June. All the workshop information will be distributed by the mailing list of para94-l@vm.uni-c.dk To subscribe send a message to listserv@vm.uni-c.dk containing sub para94-l Yourname Registration fees: 3 day workshop 700 DKK (DKK = Danish Kroner), before May 31, 1994. This includes the cost of 3 lunches, morning and afternoon coffee or tea, soft drinks, reception, a bus tour from the conference place to Copenhagen and the conference proceedings. 1 day tutorial 300 DKK (DKK = Danish Kroner), before May 31, 1994. This includes the cost of 1 lunch, morning and afternoon coffee or tea, soft drinks, and the tutorial proceedings. Registration fee must be paid by cheque. If the cheque is sent in another currency than the Danish Kroner it must of include the exchange cost which is 50 DKK for all combination costs 300, 700 or 1000 DKK. 1 American Dollar is approximatly 7 DKK. The cheques for the workshop and tutorial should be payable to the "WORKSHOP ON PARALLEL SCIENTIFIC COMPUTING" and it should be sent to the address: WORKSHOP ON PARALLEL SCIENTIFIC COMPUTING UNI*C, DTH, Bldg. 304 2800 Lyngby, Denmark Attn: Jerzy Wasniewski Email: workshop@uni-c.dk Fax: (+45) 45 93 02 20 Tel: (+45) 42 88 39 99 + 2426 ------------------------------ From: Bob Plemmons Date: Tue, 11 Jan 94 10:56:49 EST Subject: Southeastern Atlantic SIAM Meeting Meeting Announcement (Second Announcement) Southeastern-Atlantic Section of SIAM March 25-26, 1994 Wake Forest University Winston-Salem, North Carolina Invited Speakers: Shui-Nee Chow, Georgia Institute of Technology "Lattice Dynamics"; Jack Dongarra, University of Tennessee and Oak Ridge Nat. Lab. "Recent Work in Parallel Algorithms for Linear Algebra"; Avner Friedman, Institute for Mathematics and Its Applications, "Free Boundary Problems for Systems of PDE". Invited Mini-Symposia: "Fluids and Waves" Joel D. Avrin (organizer), University of North Carolina Char. J. Thomas Beale, Duke University Michael Renardy, Virginia Tech Michael E. Taylor, University of North Carolina Chapel Hill "Applied Mathematics in Industry" Robert E. Fennell (organizer), Clemson University William Browning, Applied Mathematics Inc. Karen Dunlap, Bellcore Michael Grabbe, BDM Engineering Services Co. Kevin Schweiker, Hercules Corporation "Scientific Computing" Robert E. Funderlic (organizer), N. C. State University Steven L. Lee, Oak Ridge National Laboratory Skip Thompson, Radford University Jeffrey O. Young, National Oceanic and Atmospheric Admin., "Applications of Mathematics at ORNL" Esmond G. Y. Ng (organizer), Oak Ridge Nat. Lab. Michael Berry, University of Tennessee Ed D'Azevedo, Oak Ridge National Laboratory Noel Nachtigal, Oak Ridge National Laboratory Barry Peyton, Oak Ridge National Laboratory CONTRIBUTED PAPERS: Several sessions of fifteen minute presentations of contributed papers will be held. Papers in all areas of applied mathematics are welcome. To contribute a paper send a title and abstract of no more than 100 words by February 15, 1994, to: lavis@deacon.mthcsc.wfu.edu or to Richard D. Carmichael at the address given below. Abstracts should contain the title, author(s), affiliation(s), and body of abstract. STUDENT PAPERS: Sessions of fifteen minute presentations of student papers will be held, and cash prizes will be given for the best student papers. Students who desire to contribute a paper should send a title and abstract under the same guidelines as in the previous paragraph and should clearly mark on the abstract that the contribution is a student paper. MEETING DETAILS: The meeting will be held on the campus of Wake Forest University in Winston-Salem, North Carolina, and will begin at 1:00 p.m. on Friday, March 25. The registration fee (for all participants except students) is $30.00 which includes the cost of a meal on Friday night on the Wake Forest campus. Registration by mail using the attached form is preferred; please register before March 11, 1994. Make your check payable to "Dept. of MTH and CSC, WFU". A receipt, together with a map locating Wake Forest in relation to motels, will be sent to those who register before March 11, 1994. Persons can also register at the meeting. Further information can be obtained by e-mail at lavis@deacon.mthcsc.wfu.edu ------------------------------ From: SIAM Date: Tue, 11 Jan 94 11:10:27 EST Subject: SIAM Symposium on Control Problems in Industry Symposium on Control Problems in Industry Holiday Inn by the Bay July 22-23, 1994 San Diego, CA This symposium will focus on industrial control applications that have benefited from recent mathematical and technological developments. The symposium is being conducted by SIAM with the cooperation of the Institut National de Recherche en Informatique et en Automatique (INRIA). Symposium Themes The symposium will focus on the following applications and methods: o Applications of Control Techniques in - the aerospace industry - the automotive industry - the environmental sciences - manufacturing processes - the petroleum industry o Optimal Shape Design in Aerospace Applications o Optimal Design of Micro-optics o Robust Control and H-infinity Methods Invited Presentations There will be four 40-minute presentations in the morning and four in the afternoon of each day. In addition, a limited number of contributed presentations are expected. Control Techniques Applied to Combustion Problems. Jeffrey Cook New Directions in Industrial Control. Edward J. Davison Controlled Scattering of Light Waves: Optimal Design of Micro-Optical Devices. David C. Dobson Control Law Design for the Space Station. Michael Elgersma Use of Control Theory in the Petroleum Industry. Richard E. Ewing Control of Semiconductor Manufacturing Systems. Pramod P. Khargonekar Nonlinear Dynamics of Compressor Stall. Frances McCaughan Modeling and Optimization for Damped Telescopes. Mark Millman Scattering of High Frequency Waves by Coated Bodies Using Exact Controllability Methods: CEM Applications in Aerospace Engineering. Jacques Periaux Applied Mathematics and the Automotive Industry. Barry Powell Gauge Control of Film and Sheet Forming Processes. James B. Rawlings The Invariant Heat Equation and Image Analysis. Guillermo Sapiro Applications of Optimal Control to Groundwater Contamination. Christine A. Shoemaker Control of Hydraulic Equipment of a River Valley. Serge Steer Applications of H-infinity Control to Wave Generators in a Canal. Jean-Pierre Yvon Robustness Analysis of Dynamic Inversion Control Laws for Nonlinear Control of Fighter Aircraft. Bingyu Zhang Organizing Committee Irena Lasiecka (chair) Blaise Morton Jacques Henry Registration information about the symposium will be available in mid-April, 1994. To ensure receiving your copy, contact SIAM now. ------------------------------ From: SIAM Date: Tue, 11 Jan 94 12:59:42 EST Subject: Deadline, SIAM Annual Meeting A Friendly Reminder ..... 1994 SIAM Annual Meeting July 25-29, 1994 San Diego, California The deadline for submission of contributed abstracts is JANUARY 24, 1994. NOW is the time to send in a title and 75-word abstract. SIAM welcomes submission in either of the following ways: e-mail: meetings@siam.org fax: 215-386-7999 post: SIAM Conference Department 3600 University City Science Center Philadelphia, PA 19104-2688 Electronic submission is encouraged. To help in formatting your submission, plain TeX or LaTeX macros are available by contacting SIAM at meetings@siam.org. If you are not using TeX, submissions can be made as plain text e-mail. You can also submit via FAX or postal mail. ------------------------------ From: Francois Cellier Date: Wed, 12 Jan 1994 23:07:38 -0700 (MST) Subject: CACSD'94: Final Program IEEE/IFAC JOINT SYMPOSIUM ON COMPUTER-AIDED CONTROL SYSTEM DESIGN TUCSON CONVENTION CENTER 260 S. CHURCH AVE., TUCSON, ARIZ. MARCH 7-9, 1994 FINAL PROGRAM The Final Program of this conference are now available. The program is clearly too long to be listed in full in the na_digest. You can request a softcopy of the final program of this conference by sending e_mail to Cellier@ECE.Arizona.Edu . Francois E. Cellier, Ph.D. Associate Professor Dept. of Electr. & Comp. Engr. University of Arizona Tucson, AZ 85721 U.S.A. Phone: +1(602)621-6192 FAX: +1(602)621-8076 EMail: Cellier@ECE.Arizona.Edu CACSD'94: General Chairman ------------------------------ From: Joseph Traub Date: Wed, 12 Jan 94 16:11:22 EST Subject: Position at Columbia University The Computer Science Department at Columbia University wishes to make a tenure track appointment in parallel scientific computation. Candidates should have exceptional research records or promise, as well as interest in teaching. The following characteristics are necessary: --- Substantial expertise in parallel or distributed computing --- Very strong in mathematics and scientific computation Knowledge of an area of computational science is a plus. To learn more about our Department, see our general faculty recruiting ad in CACM. To apply, please send your CV, a selection of your papers and /or reports, and the names of at least three references to: Joseph Traub Computer Science Department 456 Computer Science Building Columbia University New York, NY 10027 ------------------------------ From: Robert Robey Date: Fri, 14 Jan 1994 09:14:56 -0700 Subject: Position at Maui High Performance Computing Center POSITION ANNOUNCEMENT DIRECTOR MAUI HIGH PERFORMANCE COMPUTING CENTER (MHPCC) REOPENED SUMMARY The Director of the MHPCC is the chief operating administrator of the Maui Center and reports to the UNM Center for High Performance Computing (CHPC) which administers the project for UNM. The Director is responsible for programs at the MHPCC including user services, systems and operations, and outreach, including education, economic development, and technology transfer. This is a major DoD and academic facility and the Director has a primary responsibility for its effectiveness and success. The MHPCC is expected to be established with a strong "Center-based" management structure. The MHPCC has the strong backing of a committed team of institutional partners. Requests for additional information about the MHPCC shall be sent to Curt Wann, Project Manager, at UNM, (505)277-8249, e-mail is cwann@houdini.eece.unm.edu. Completed applications, including a vita and names, phone number, addresses, and e-mail addresses of four references, must be received by February 4, 1994. Send application material to Director Search Committee, Maui Project, Math Annex, University of New Mexico, Albuquerque, NM, 87131. Reference position announcement 0893-93A. DUTIES AND RESPONSIBILITIES Duties involve overseeing a $30-50M budget over the first three years, an initial staff of 20-30, overseeing the installation of $20M in latest IBM Scalable Parallel Processor (SPP) computers and other equipment, overseeing the installation and maintenance of a Maui to CONUS network, directing the development of an effective user services system to span the country, and overseeing the development of an effective outreach operation to DoD, business, industry, government labs, and education. The Director will become the major advocate for the MHPCC, be a national leader in high performance computing inside the DoD, in the general user community, and in business and industry, and maintain close ties with the UNM CHPC. The Director will be responsible, in collaboration with the UNM CHPC, for seeking enhancement funding for the MHPCC. Although the Director is the chief operation officer of the MHPCC, the Director must also perform duties which are necessary to keep the Center operational and effective. Thus, the Director must occasionally perform user services duties, operational duties and liaison duties which are normally delegated to subordinates. EDUCATION AND EXPERIENCE Minimum requirements are a Ph.D. in an appropriate scientific or engineering discipline or an MS degree plus applicable experience; at least 10 years experience in research, operations, and administration in high performance computing. At least two of these years must involve high level administrative experience in a high performance computing. Must be legally authorized to work in the USA and must have or be able to obtain a SECRET level clearance. SKILLS, KNOWLEDGE, AND EXPERIENCE It is desired that the Director have a national reputation in high performance computing with membership on national committees and boards recognized in the field of high performance, or scientific computing. The position also involves working with diverse organizations, establish priorities, and manage and direct financial resources. The candidate should have extensive supervisory and management ability, the ability to develop rapport with a wide constituency including the local community and business interests, and shall have demonstrated emotional and financially stability, dependability, and the ability to work in extremely stressful situations. Extensive travel is required with the ability to diplomatically represent the MHPCC, UNM, and the Center Partners at national forums and in political situations. The position will require considerable additional time other than normal working hours, and requires locating in Maui, Hawaii. UNM is an Affirmative Action/Equal Opportunity Employer ------------------------------ From: A. Spence Date: Fri, 14 Jan 94 22:08:14 GMT Subject: Chair of Applied Mathematics at Bath University UNIVERSITY OF BATH SCHOOL OF MATHEMATICAL SCIENCES PROFESSOR OF APPLIED MATHEMATICS Following the election of Professor John Willis FRS to the new Chair of Theoretical Solid Mechanics at the University of Cambridge, the University of Bath is seeking to appoint to this established chair a person with an outstanding research record who will provide leadership and foster research excellence. Current research activity in Applied Mathematics at Bath can be roughly categorised as: Applied Nonlinear Analysis Control Theory Mathematical Biology Numerical Analysis Solid Mechanics. Informal enquiries may be made to Professor J H Davenport (tel. +44 225 826181; jhd@maths.bath.ac.uk) or Professor A Spence (tel. +44 225 826011; as@maths.bath.ac.uk, or na.spence@na-net.ornl.gov). The School fax number is +44 225 826492. The appointment is tenable from 1st September 1994 or as soon as possible thereafter. Further particulars may be obtained from Peter J Hill, Director of Personnel, University of Bath, Claverton Down, Bath BA2 7AY (tel. +44 225 826026; fax +44 225 826559; adspjh@bath.ac.uk). The closing date for applications is 28th February 1994. ------------------------------ From: Richard Brualdi Date: Tue, 11 Jan 1994 12:12:24 -0600 (CST) Subject: Contents: Linear Algebra and its Applications LINEAR ALGEBRA AND ITS APPLICATIONS Contents Volumes 197, 198 Proceedings of the Second Conference of the International Linear Algebra Society (Lisbon, 1992) Peter Lancaster (Calgary, Alberta, Canada), Alexander S. Markus (Beer Sheva, Israel), and Qiang Ye (Winnipeg, Manitoba, Canada) Low Rank Perturbations of Strongly Definitizable Transformations and Matrix Polynomials 3 Dragomir Z. Dokovic (Waterloo, Ontario, Canada) and Chi-Kwong Li (Williamsburg, Virginia) Overgroups of Some Classical Linear Groups With Applications to Linear Preserver Problems 31 M. J. C. Gover (Bradford, West Yorkshire, England) The Eigenproblem of a Tridiagonal 2-Toeplitz Matrix 63 Alexander Kovacec and Ana Paula Santana (Coimbra, Portugal) A Combinatorial Theorem on the Cartan Invariants of the Schur Algebra S(B+) 79 B. Beckermann and G. Muhlbach (Hannover, Germany) A General Determinantal Identity of Sylvester Type and Some Applications 93 Tsuyoshi Ando (Sapporo, Japan) and Fumio Hiai (Mito, Ibaraki, Japan) Log Majorization and Complementary Golden-Thompson Type Inequalities 113 M. Gasca and J. M. Pena (Zaragoza, Spain) A Test for Strict Sign-Regularity 133 Russell Merris (Hayward, California) Laplacian Matrices of Graphs: A Survey 143 Maria Antonia Duffner (Lisboa, Portugal) and G. N. de Oliveira (Coimbra, Portugal) Pairs of Matrices Satisfying Certain Polynomial Identities 177 Raphael Loewy and Nizar Radwan (Haifa, Israel) Spaces of Symmetric Matrices of Bounded Rank 189 Kurt J. Reinschke (Dresden, Deutschland) Graph-Theoretic Approach to Symbolic Analysis of Linear Descriptor Systems 217 Rajendra Bhatia (New Delhi, India) Matrix Factorizations and Their Perturbations 245 Joao Filipe Queiro (Coimbra, Portugal) An Inverse Problem for Singular Values and the Jacobian of the Elementary Symmetric Functions 277 Axel Ruhe (Goteborg, Sweden) Rational Krylov Algorithms for Nonsymmetric Eigenvalue Problems. II. Matrix Pairs 283 A. Bjorck (Linkoping, Sweden) Numerics of Gram-Schmidt Orthogonalization 297 Chi-Kwong Li (Williamsburg, Virginia) and Maria Emilia Miranda (Coimbra, Portugal) Antidiagonals of Matrices in a Unitary Similarity Orbit 317 Miroslav Fiedler (Praha, Czech Republic) Elliptic Matrices With Zero Diagonal 337 Eduardo Marques de Sa (Coimbra, Portugal) Faces and Traces of the Unit Ball of a Symmetric Gauge Function 349 R. B. Bapat and A. K. Lal (New Delhi, India) Inequalities for the q-Permanent 397 Natalia Bebiano, Alexander Kovacec, and Joao da Providencia (Coimbra, Portugal) The Validity of the Marcus-de Oliveira Conjecture for the Essentially Hermitian Matrices 411 Eduardo Marques de Sa (Coimbra, Portugal) Exposed Faces and Duality for Symmetric and Unitarily Invariant Norms 429 Eduardo Marques de Sa (Coimbra, Portugal) Faces of the Unit Ball of a Unitarily Invariant Norm 451 M. C. Gouveia (Coimbra, Portugal) Group and Moore-Penrose Invertibility of Bezoutians 495 J. J. McDonald (Madison, Wisconsin) A Product Index Theorem With Applications to Splittings of M-matrices 511 Daniel Alpay (Beer-Sheva, Israel), Joseph A. Ball (Blacksburg, Virginia), Israel Gohberg (Tel-Avev, Israel), and Leiba Rodman (Williamsburg, Virginia) J-Unitary Preserving Automorphisms of Rational Matrix Functions: State Space Theory, Interpolation, and Factorization 531 M. Antonia Duffner (Lisboa, Portugal) Linear Transformations That Preserve Immanants 567 Ma Asuncion Beitia and Ion Zaballa (Vitoria-Gasteiz, Spain) Invariants of the Block Tensor Product 589 Georg Heinig and Frank Hellinger (Leipzig, Germany) Displacement Structure of Pseudoinverses 623 H. Bart (Rotterdam, the Netherlands) and V. E. Tsekanovskii (Buffalo, New York) Complementary Schur Complements 651 Gordon James (London, England) Hecke Algebras and Immanants 659 Thomas J. Laffey and Robert Reams (Dublin, Ireland) Integral Similarity and Commutators of Integral Matrices 671 Jiang Erxiong (Shanghai, China) Bounds for the Smallest Singular Value of a Jordan Block With an Application to Eigenvalue Perturbation 691 Fernando C. Silva (Lisboa, Portugal) On the Number of Invariant Polynomials of Partially Prescribed Matrices 709 Biswa Nath Datta (DeKalb, Illinois) Linear and Numerical Linear Algebra in Control Theory: Some Research Problems 755 J. A. Dias da Silva (Lisboa, Portugal) REPORT: Second Conference of the International Linear Algebra Society (Lisbon, 1992) 793 ------------------------------ From: SIAM Date: Fri, 14 Jan 94 12:30:16 EST Subject: Contents: SIAM Mathematical Analysis TABLE OF CONTENTS SIAM J. Math. Anal May 1994 Asymptotic Stability for Intermittently Controlled Nonlinear Oscillators Patrizia Pucci and James Serrin Asymptotic Analysis of a Multidimensional Vibrating Structure Carlos Conca and Enrike Zuazua On Characterization of Solutions of Some Nonlinear Differential Equations and Applications Marie-Francoise Bidaut-Veron and Mustapha Bouhar On Global Weak Solutions of the Nonstationary Two-Phase Stokes Flow Yoshikazu Giga and Shuji Takahashi A Remark on Quasi-Stationary Approximate Inertial Manifolds for the Navier-Stokes Equations D. A. Jones and E. S. Titi Dispersion in Pipes with Slowly Varying Cross-Sections W. P. Kotorynski On a Local Existence Theorem for a Simplified One-Dimensional Hydrodynamic Model for Semiconductor Devices Bo Zhang Stability of Some Test Equations with Delay V. B. Kolmanovskii, L. Torelli, and R. Vermiglio Hermite Interpolation on the Lattice ZZd Kurt Jetter, Sherman D. Riemenschneider, and Zuowei Shen Characterizations of Orthogonal Polynomials Satisfying Differential Equations K. H. Kwon, L. L. Littlejohn, and B. H. Yoo On Zeros of Multivariate Quasi-Orthogonal Polynomials and Gaussian Cubature Formulae Yuan Xu Barnes- and Ramanujan-Type Integrals on the q-Linear Lattice Mizan Rahman and Sergei K. Suslov ------------------------------ End of NA Digest ************************** -------