IPNet Digest Volume 7, Number 02 February 28, 2000 Today's Editor: Patricia K. Lamm Michigan State University Today's Topics: Meeting: Tenth Seminar on Inverse Problems in Engineering Communication: Austrian mathematics Position: Large Scale Inverse Problems Position: Mechanics Inverse Problems: Crack Identification Positions: Identification and Control of Nonlinear Problems Special Issues: Linear Algebra and Its Applications Table of Contents: Electronic Transactions Numerical Analysis Table of Contents: Advances in Computational Mathematics Table of Contents: Linear Algebra and Its Applications Submissions for IPNet Digest: Mail to ipnet-digest@math.msu.edu Information about IPNet: Mail to ipnet-request@math.msu.edu http://www.mth.msu.edu/ipnet ------------------------------ From: "Keith A. Woodbury" Subject: 10th Seminar on Inverse Problems in Engineering - 2nd Announcement Date: Wed, 16 Feb 2000 Tenth Inverse Problems in Engineering Seminar Second Announcement Monday, June 5 - Tuesday, June 6, 2000 The University of Texas at Arlington Arlington, Texas About the Seminar The Tenth Inverse Problems in Engineering Seminar is the continuation of the informal seminars which were initiated at Michigan State University in 1987. This seminar will be sponsored by the School of Engineering and the Department of Mechanical and Aerospace Engineering at The University of Texas at Arlington. Call for Papers Papers are solicited from all areas involving inverse methods and their applications. Four broad categories are being used to organize sessions. These categories and possible sub-topics are: 1. Mathematical Aspects of Inverse Problems - inverse theory and methods, uniqueness and stability considerations, Volterra and other integral equations 2. Inverse Problems in Heat Transfer - inverse heat conduction, inverse Stefan problem, thermal property estimation 3. Inverse Problems in Mechanics - applications in dynamics, petroleum engineering, shape optimization, contact problems, control of fluid flow 4. Other Inverse Problems - bio-engineering inverse problems, inverse scattering and tomography, etc. Presentations will be informal twenty minute talks. In addition, there will be forty minute invited talks by: Professor James V. Beck, Professor emeritus, Department of Mechanical Engineering, Michigan State University Professor George Dulikravich, Department of Mechanical and Aerospace Engineering at The University of Texas at Arlington Professor A. T. Watson, Department of Chemical Engineering, Texas A&M University The guest speaker, Professor Daniel A. Tortorelli, Department of Mechanical & Industrial Engineering, University of Illinois at Urbana-Champaign If the number of submissions warrants additional program time, a poster session will be included. How to Register or Submit a Paper The seminar fee is $65. This fee includes continental breakfast both days of the seminar, a Texas barbecue on Monday evening, and a copy of the proceedings. If you are interested in registering for this conference, please contact a co-chair listed below to receive registration material. If you would like to submit a paper, please submit a tentative title and an abstract by March 15, 2000. Send titles and abstracts or other inquiries to: Keith A Woodbury, Professor A. Haji-Sheikh, Professor Department of Mechanical Engineering Department of Mechanical & Aerospace The University of Alabama Engineering Box 870276 The University of Texas at Arlington Tuscaloosa, AL 35487-0276 Box 19023 Phone: (205) 348-1647 Arlington, TX 76019-0023 Fax: (205) 348-6419 Phone (817) 272-2010 Email: woodbury@me.ua.edu Fax: (817) 272-2952 Email: haji@mae.uta.edu Abstracts/Proceedings The abstract should be one page single space. The abstract and any materials submitted by the deadline (May 10, 2000) would be photocopied and distributed as informal proceedings to the conference participants at check-in. Full Papers Preparation of a full text is optional and if submitted by the deadline (May 10, 2000) will be included in the informal proceedings described above. The text should be prepared single space with 1-inch (2.5-cm) margins on 8.5 inch by 11 inch paper. Interested authors are invited to simultaneously submit an electronic copy of the full paper to Professor George Dulikravich , the founding editor of the Inverse Problems in Engineering journal. Following the standard review process for the IPE journal, the accepted papers will be published in a special issue. ------------------------------ From: "PROF.HEINZ W. ENGL" Subject: Austrian mathematics Date: Sun, 27 Feb 2000 Dear Colleagues, I am sure you heard about the unpleasant political developments in Austria. Let me assure you that the scientific community and also, I think, the majority of the Austrian population are not at all happy with this situation. Austrian mathematics has always seen itself embedded into the international scientific community and of course continues to do so. In the current situation we need support from the international scientific community more than ever. I urge you not to punish your colleagues for developments for which they are not responsible by reducing scientific contacts. I thank you for your continued support and remain with best regards, Heinz Engl Prof.Dr.Heinz W. Engl E-Mail: engl@indmath.uni-linz.ac.at Institut fuer Industriemathematik secretary:nikolaus@indmath.uni-linz.ac.at Johannes-Kepler-Universitaet Phone:+43-(0)732-2468...,ext.9219 or 693, Altenbergerstrasse 69 secretary: ext.9220; as Dean: ext.3220 A-4040 Linz Fax:ext. 855, in Dean's affairs:ext.3225 Oesterreich / Austria home phone: +43-(0)732-245518 World Wide Web: http://www.indmath.uni-linz.ac.at/ ------------------------------ From: "PROF.HEINZ W. ENGL" Subject: position announcement Date: Mon, 31 Jan 2000 RESEARCH POSITION AT JOANNES KEPLER UNIVERSITAET LINZ, AUSTRIA The ``Spezialforschungsbereich'' SFB F013 ''Numerical and Symbolic Scientific Computing'' offers a Ph.D. student and/or post doc position for research in the field of ` `Large Scale Inverse Problems'' within the SFB project 1308 of the same name, for one year (possibly extendable). The objective of this research project is to apply and develop solution methods for inverse problems in PDEs, where the numerical solution of the corresponding direct problems leads to large scale equations and therefore requires efficient solvers such as multigrid methods. The candidate is therefore expected to provide both sound knowledge in numerical mathematics and acquaintance with regularization methods for ill-posed problems, as well as the ability to cooperate with other research groups within the SFB. Interested candidates are invited to send a CV together with a list of publications as soon as possible to Prof. Dr. H.W.Engl Johannes Kepler University Linz Institute for Industrial Mathematics Altenbergerstr. 69 A-4040 Linz Austria E-mail: engl@indmath.uni-linz.ac.at Tel. ++43-732-2468-9168 Fax ++43-732-2468-855 For further information, see also http://www.indmath.uni-linz.ac.at For questions, please contact: Dr.B. Kaltenbacher, kaltenbacher@indmath.uni-linz.ac.at Submitted by: Prof.Dr.Heinz W. Engl E-Mail: engl@indmath.uni-linz.ac.at Institut fuer Industriemathematik secretary:nikolaus@indmath.uni-linz.ac.at Johannes-Kepler-Universitaet Phone:+43-(0)732-2468...,ext.9219 or 693, Altenbergerstrasse 69 secretary: ext.9220; as Dean: ext.3220 A-4040 Linz Fax:ext. 855, in Dean's affairs:ext.3225 Oesterreich / Austria home phone: +43-(0)732-245518 World Wide Web: http://www.indmath.uni-linz.ac.at/ ------------------------------ From: Georgios Stavroulakis To: ipnet-digest@math.msu.edu Subject: Student position at the Technical University of Braunschweig Institute of Applied Mechanics, Technical University Braunschweig, Germany Scientific Assistant - PhD Candidate position We are looking for a Civil or Mechanical Engineer with knowledge of Mechanics, Mathematics and Physics, to work with us for a research project supported by the German Research Society (Deutsche Forschungsgemeinschaft) as Scientific Assistant. The project deals with the study of inverse problems in engineering mechanics and application on crack identification using modern techniques of computational mechanics and soft computing (neural networks, filters, etc.). The financial support for the first two years is provided (salary according to BATIIa). Extension to one more year is possible. The completion of a PhD in this scientific area will be supported. More details can be found in the official Stellenausschreibung http://www.infam.tu-bs.de/infam/aktuelles/stelle01.html in a page written in English http://www-public.tu-bs.de:8080/~i5042301/stellet.html and in the WWW-page of the Institute of Applied Mechanics http://www.infam.tu-bs.de If you are interested or if you need more information please contact Dr.-Ing. Georgios E.Stavroulakis at: G.Stavroulakis@tu-bs.de or Prof.Dr.rer.nat. Heinz Antes at: H.Antes@tu-bs.de Institute of Applied Mechanics Technical University of Braunschweig, Germany Deadline of applications is 29.02.2000 Submitted by: Dr Ing Georgios E. Stavroulakis Institute for Applied Mechanics * Tel ++ 49 531 391 7107 Technical University Braunschweig, Spielmannstr. 11, P.O.Box 3329 D-38106 Braunschweig, Germany Email g.stavroulakis@tu-bs.de * URL http://www.tu-bs.de/~i5042301 ------------------------------ From: Marty Brenner Subject: NASA/RRA/NRC Postdoctoral, Senior Research Awards Date: Mon, 31 Jan 2000 NASA/RRA/NRC Postdoctoral and Senior Research Awards NASA Dryden Flight Research Center Proposed Research Title: Nonlinear Analysis of Aerospace Systems using Multiresolution Methods NASA Resident Research Associateships (RRA) are administered by the National Research Council (NRC). These opportunities at NASA Dryden are open only to US citizens. Postdoctoral Research Associateships are awarded to those with a PhD less than five years, and Senior Research Associateships to those with the doctorate five years or more. They are usually for 1-2 years, but Senior awards for periods of three months or longer are considered. A Research Associate must conduct his research full-time and on-site. Evaluations are conducted in June, October, and February by the NRC. Application deadlines are Apr 15, Aug 15, and Jan 15, respectively. Current annual stipend is about $50K for Postdoc and $80K for Senior. Problem definition: The ability to identify and control nonlinear phenomena is extremely important to the aerospace community. Understanding aeroelastic nonlinear dynamics is becoming vital for advanced design configurations. Stability estimation from flight data must account for nonlinearity to distinguish linear from nonlinear dynamics for model development. Confidence bounds are desired in identification schemes to guarantee system stability within a flight regime. Realistic stability prediction requires system identification consistent with uncertainty and disturbance models. Application of multiscale wavelet methods is an attractive approach to this problem. Adaptive signal decompositions for signal processing of nonlinear and time-varying systems is a major focus of research at NASA Dryden. Algorithms are needed to generate adaptive multiresolution representations for identification in aircraft dynamics analysis. Dryden is studying linear and nonlinear identification algorithms and methodologies for in-flight aeroservoelasticity (aero+structures+controls). Intelligent data processing and analysis methods are desired for accurate control-oriented stability determination during flight testing. This integrated research effort requires innovative digital signal processing, identification, and robust system theory applications. Contact: Marty Brenner NASA Dryden Flight Research Center MS 4840D / RS Edwards, California 93523-0273 Phone: 661-258-3793 (starting in March: 661-276-3793) Email: martin.brenner@dfrc.nasa.gov See: http://www/trc/Postdoc/nrc.html http://www.national-academies.org/rap ------------------------------ The following is a compilation of several different submissions to the IPNet Digest. -ed From: Hans Schneider Subject: LAA Special Issue Date: Sat, 26 Feb 2000 LINEAR ALGEBRA AND ITS APPLICATIONS CALL FOR PAPERS: Fourth Special Issue on Linear Systems and Control. In the past, LAA has published three special issues devoted to the field of Linear Systems and Control: 1983 (vol. 50), 1989 (vols. 122-124) and 1994 (vols. 203-204). More than six years after the publication of the last special issue, it is time to take stock of recent and current interactions between Linear Algebra and Systems Theory. The cross fertilization between these two fields has been very fruitful in the past. While linear algebraic methods have been instrumental for much of the development of linear systems theory, many system theoretic concepts and constructions are now part of the body of linear algebra. Today systems theory is a place where methods from many different parts of mathematics are combined. As a result linear systems theory has become a rich source of linear algebraic problems. More recently, new paradigms, new problems and areas of application have appeared on the scene: the behavioural approach, coding theory, distance problems and parameter uncertainty, the dynamic systems approach to algorithms, computational complexity issues in systems theory and discrete event systems. These important subject areas have enriched linear systems theory and will influence the future development of linear algebra, too. We hope that the upcoming issue will further this process and we encourage all authors working in these areas to submit their contributions. As in previous issues, this one will be open for all papers with significant new results in Systems and Control Theory where either linear algebraic methods play an important role or new tools and problems of linear algebraic nature are presented. Also survey papers are very welcome which illustrate specific areas where the interaction of Systems Theory and Linear Algebra has been particularly successful. Papers must meet the publication standards of Linear Algebra and Its Applications and will be refereed in the usual way. Areas and topics of interest for this special issue include: - Structure theory of linear systems and system families - Stability theory - Distance problems and analysis of uncertain systems - Methods of robust control - Approximation and interpolation problems arising in systems theory - Geometric control theory and geometry of linear systems - Linear behaviors - Multidimensional systems and systems over rings - Module theoretic techniques in system theory - Coding theory with connections to systems theory - Algorithms for linear systems - Numerical issues in linear systems theory - Computational complexity in linear algebra and systems theory - Discrete event systems The deadline for submission of papers is 31 December 2000, and the special issue is expected to be published in the first half of 2002. Papers should be sent to any of its special editors: Vincent Blondel Department of Mathematical Engineering, CESAME Université catholique de Louvain Avenue Georges Lemaitre, 4 B-1348 Louvain-la-Neuve Belgium E-mail: blondel@inma.ucl.ac.be Diederich Hinrichsen Institut fuer Dynamische Systeme, Universitaet Bremen Postfach 330 440 D 28334 Bremen Germany E-mail: dh@math.uni-bremen.de Joachim Rosenthal Department of Mathematics University of Notre Dame Notre Dame, IN 46556-5683 U.S.A. E-mail: rosen@nd.edu Paul Van Dooren Department of Mathematical Engineering, CESAME Université catholique de Louvain Avenue Georges Lemaitre, 4 B-1348 Louvain-la-Neuve Belgium E-mail: vdooren@anma.ucl.ac.be From: Richard Brualdi Subject: LAA Special Issue Date: Tue, 8 Feb 2000 Linear Algebra and its Applications is pleased to announce a special issue in honor of Professor T. Ando in recognition of his many and diverse, very important contributions to linear algebra, matrix theory, and operator theory, and in celebration of his seventieth birthday on February 1, 2002. The deadline for submission of papers is February 1, 2001 with publication expected in late 2001 or early 2002. We invite you to submit a paper in the areas mentioned above for this special issue to any of its special editors: Professor Rajendra Bhatia Indian Statistical Institute New Delhi 110 016 India rbh@isid.ac.in Professor Chi-Kwong Li Dept. of Mathematics The College of William and Mary P. O. Box 8795 Williamsburg VA 23187-8975 USA ckli@math.wm.edu Professor Kazuyoshi Okubo Mathematics Laboratory Sapporo College Hokkaido University of Education Sapporo 020 Japan okubo@atson.sap.hokkyodai.ac.jp Michael J. Tsatsomeros Dept. of Mathematics and Statistics University of Regina 307.14 College West Regina Sask SAS 0A2 Canada tsat@math.uregina.ca From: Mehrmann Volker Subject: LAA Special Issue Date: Mon, 21 Feb 2000 Special Issue of Linear Algebra and its Applications on Linear Algebra Methods in Representation Theory In the last three decades in the representation theory of finite-dimensional algebras over a field or even of more general algebraic structures several new methods have emerged, including combinatorial, homological, categorical and geometric aspects. One underlying aspect is the input from Linear Algebra in a wider sense. One basic problem in the representation theory is the classification of indecomposable objects in some Krull-Remak-Schmidt category, or in linear algebra terminology normal forms of indecomposable matrices. In case there exists (up to isomorphism) only finitely many such indecomposable objects (finite type) much more information is available and progress has been made in case this classification depends only on one-parameter families of indecomposable objects (tame type). In the remaining case which is usually called the wild case, there is only scattered information available. Due to a vast number of internal questions but also problems arising in applications such as perturbation and control theory the wild case should be treated seriously. In the last thirty years the area of representation theory has been extending in several directions. We want to take this opportunity to devote a special issue on the Linear Algebra aspects. A preliminary list of topics would include. Representations of quivers Representations of posets and BOCS's Normal forms of matrices with additional structure Involutive algebras and their representation theory Hall algebras Applications to numerical linear algebra This is a sample, but not an exclusive list of topics. If there is doubt about suitability of a particular paper, please contact one of the editors of the special issue. Please submit three (3) hard copies to one of the special issue editors listed below. The format should follow the instructions given in the `Information for Authors' in a recent issue of LINEAR ALGEBRA AND ITS APPLICATIONS. The deadline for submission is DECEMBER 31, 2000. Special editors: Yuri Drozd Faculty of Mechanics and Mathematics Kyiv Taras Shevchenko University 252 033 Kyiv, Ukraine} e-mail: drozd@uni-alg.kiev.ua Robert Guralnick Department of Mathematics University of Southern California Los Angeles, California 90089-1113, USA e-mail: guralnic@math.usc.edu Dieter Happel Fakultaet fuer Mathematik Technische Universitaet Chemnitz D-09116 Chemnitz, Germany e-mail: happel@mathematik.tu-chemnitz.de Claus Michael Ringel Fakultaet fuer Mathematik Universitaet Bielefeld D-33501 Bielefeld, Germany e-mail: ringel@mathematik.uni-bielefeld.de ------------------------------ From: Lothar Reichel Subject: Contents: Electronic Transactions on Numerical Analysis (ETNA) Date: Wed, 9 Feb 2000 Electronic Transactions on Numerical Analysis 1999 Volume 8 Table of Contents Domain decomposition algorithms for first-order system least squares methods L. F. Pavarino On Gersgorin-type problems and ovals of Cassini R. S. Varga and A. Krautstengl An optimum iteration for the matrix polar decomposition A. A. Dubrulle Preconditioners for least squares problems by LU factorization A. Bjorck and J. Y. Yuan On a posteriori error estimators in the finite element method on anisotropic meshes M. Dobrowolski, S. Graf and C. Pflaum On the convergence of multigrid methods for flow problems I. Presson, K. Samuelsson and A. Szepessy Numerical experiments with parallel orderings for ILU preconditioners M. Benzi, W. Joubert and G. Mateescu A note on the numerical solution of complex Hamiltonian and skew-Hamiltonian eigenvalue problems P. Benner, V. Mehrmann and H. Xu Discrete wavelet transforms accelerated sparse preconditioners for dense boundary element systems K. Chen Whitney Elements on pyramids V. Gradinaru and R. Hiptmair Electronic Transactions on Numerical Analysis 1999 Volume 9 Table of Contents This volume contains the Proceedings of the International Workshop on Orthogonal Polynomials held at University Carlos III de Madrid in Leganes, Spain, 1998, organized by M. Alfaro, R. Alvarez-Nodarse, J. Arvesz and F. Marcellan (Chair). The proceedings were edited by R. Alvarez-Nodarse and F. Marcellan. M. Alvarez de Morales, T. E. Pirez, M. A. Piqar and A. Ronveaux Non-standard orthogonality for Meixner polynomials Computation of Gauss-Kronrod quadrature rules with non-positive weights G. S. Ammar, D. Calvetti and L. Reichel Quadrature formulas for rational functions F. Cala Rodriguez, P. Gonzalez-Vera, and M. Jimenez Paiz A footnote on quaternion block-tridiagonal systems C. Costa and R. Serodio Sobolev orthogonal polynomials: interpolation and approximation E. M. Garcma-Caballero, T. E. Pirez and M. A. Piqar Orthogonal polynomials and quadrature W. Gautschi Software for the algorithmic work with orthogonal polynomials and special functions W. Koepf Creation and annihilation operators for orthogonal polynomials of continuous and discrete variables M. Lorente q-Classical orthogonal polynomials: a very classical approach F. Marcellan and J. C. Medem An iterative method for computing the eigenvalues of second kind Fredholm operators and applications P. Natalini, S. Noschese and P. E. Ricci Evaluation of associated Legendre functions off the cut and parabolic cylinder functions J. Segura and A. Gil Proof of a conjecture of Chan, Robbins, and Yuen Doron Zeilberger ------------------------------ From: "Listowner" Subject: Contents of Advances in Computational Mathematics Date: Mon, 31 Jan 2000 Advances in Computational Mathematics 12 (2000) 1-3 Table of Contents Special Issue: High dimensional integration Editor: E. Novak High dimensional integration Erich Novak The exponent of discrepancy of sparse grids is at least 2.1933 Leszek Plaskota Integration and approximation in arbitrary dimensions F.J. Hickernell and H. Wozniakowski An average discrepancy for optimal vertex-modified number-theoretic rules Muni V. Reddy and Stephen Joe On the Smolyak cubature error for analytic functions Knut Petras Advances in Computational Mathematics 12 (2000) 2,3 Table of Contents On the detection of singularities of a periodic function H.N. Mhaskar and J. Prestin Some results for a class of generalized polynomials Serena Morigi and Marian Neamtu A fast matrix--vector multiplication method for solving the radiosity equation Kendall Atkinson and David Da-Kwun Chien Asymptotic convergence of degree-raising Michael S. Floater and Tom Lyche Parameterization of m-channel orthogonal multifilter banks Qingtang Jiang Weak greedy algorithms V.N. Temlyakov Diagonally implicit Runge--Kutta methods for 3D shallow water applications P.J. van der Houwen and B.P. Sommeijer Convergence of Galerkin method solutions of the integral equation for thin wire antennas Bryan P. Rynne Modified Mini finite element for the Stokes problem in R2 or R3 Yongdeok Kim and Sungyun Lee More information about contents, submission and preparation of papers can be found on http://www.baltzer.nl/adcom Please direct enquiries about subscription and other issues to subscribe@baltzer.nl Sincerely, Baltzer Science Publishers ------------------------------ From: Hans Schneider Subject: LAA contents Date: Sun, 13 Feb 2000 Linear Algebra and Its Applications February 2000 Vol. 306, Issue 1-3 Table of Contents Equivalence constants for matrix norms: a problem of Goldberg A Tonge Classes of Schur D-stable matrices R Fleming A representation theorem for algebras with commuting involutions M Cabrera Sparsity of orthogonal matrices with restrictions GS Cheon, BL Shader On sums of three square-zero matrices K Takahashi, Peiyuan Wu The Nevanlinna-Pick interpolation problems and power moment problems for matrix-valued functions III: The infinitely many data case Gongning Chen Generalized totally positive matrices M Fiedler On almost regular tournament matrices C Eschenbach, JR Weaver Dual graphs and knot invariants M Lien, W Watkins Decomposing a matrix into circulant and diagonal factors M Schmid, R Steinwandt Centrogonal matrices O Krafft Spectral clustering properties of block multilevel Hankel matrices D Fasino On condensed forms for partially commuting matrices YUA Alpin, L Elsner A tree whose complement is not eigensharp VL Watts Growth in Gaussian elimination for weighing matrices, W(n,n-1) Christos Koukouvinos Semidefiniteness without real symmetry CR Johnson, RB Reams NOTE: ContentsDirect, which is automatically generated, lists the first author of each paper and the corresponding author (if different). Submitted by: Hans Schneider hans@math.wisc.edu. Department of Mathematics 608-262-1402 (Work) Van Vleck Hall 608-271-7252 (Home) 480 Lincoln Drive 608-263-8891 (Work FAX) University of Wisconsin-Madison 608-271-8477 (Home FAX) Madison WI 53706 USA http://www.math.wisc.edu/~hans (URL) ------- end -------