IPNet Digest Volume 7, Number 04 April 30, 2000 Today's Editor: Patricia K. Lamm Michigan State University Today's Topics: Scientific query: A System Matrix Inverse Problem Conference: Summer School and Conference in Edinburgh Seminar: Inverse Problems Seminar of the Pacific Northwest Position: Professorship in Applied and Computer-Oriented Math Table of Contents: Inverse Problems in Engineering Table of Contents: Mathematics of Control, Signals, and Systems Table of Contents: Electronic Transactions on Numerical Analysis 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: Nils Wagner Subject: Inverse problem Date: Sat, 22 Apr 2000 Subject : Inverse problem We assume that we sample a LTI system at a rate h. The measurements are vector observations z_k which satisfy the relation z_{k+1} = \exp(Ah) z_k where A is the system matrix associated with the observations. The goal is to obtain an estimate of A from observations. Is it possible to give a bound for the system matrix error || A-A_est || ? I am looking for contributions to this area. Nils Wagner University of Stuttgart Institute for Statics and Dynamics of Aerospace Structures Pfaffenwaldring 27 D-70569 Stuttgart Germany ------------------------------ From: Bill Lionheart Subject: Summer School and Conference in Edinburgh Date: Mon, 17 Apr 2000 New Analytic and Geometric Methods in Inverse Problems EuroSummerSchool 24 July to 2 August 2000 Heriot-Watt University, Edinburgh Recent Developments in the Wave Field and Diffuse Tomographic Inverse Problems EuroConference 3-5 August 2000 Heriot-Watt University, Edinburgh Satellite conference for ICMP,200 Details of these meetings can be found on http://www.ma.hw.ac.uk/icms/current/invprob/sci_prog.html And the programme on http://www.ma.hw.ac.uk/icms/current/invprob/timetable_ss.html Dr W.R.B. Lionheart, Department of Mathematics UMIST,http://www.ma.umist.ac.uk/bl/ ------------------------------ From: Adel Faridani Subject: Inverse Problems Seminar Date: Tue, 18 Apr 2000 INVERSE PROBLEMS SEMINAR OF THE PACIFIC NORTHWEST 2000 Meeting Oregon State University Corvallis, OR Saturday and Sunday, June 3-4, 2000 The purpose of the annual Inverse Problems Seminar of the Pacific Northwest is to foster communication between mathematicians and other scientists in the region working on various aspects of inverse problems. This year the meeting is at Oregon State University in Corvallis, Oregon. It will begin on Saturday, June 3 at 11:30am and conclude Sunday, June 4 in the early afternoon. Confirmed main speakers so far include Carlos Berenstein (Mathematics, University of Maryland), Eldad Haber (Geophysics, University of British Columbia), Jodi Mead (Oceanography, Oregon State University), and John Sylvester (Mathematics, University of Washington). There are a few openings for 20 minute contributed talks. This conference is free to all participants, and advance registration is not necessary. Limited travel support is available. Information about the meeting will be posted on the web at http://osu.orst.edu/~finchd/ipspn.html If you need more information, wish to contribute a talk, or to apply for travel support, please contact Adel Faridani (faridani@math.orst.edu) or David Finch (finch@math.orst.edu). ------------------------------ From: "PROF.HEINZ W. ENGL" Subject: position announcement innsbruck (austria) Date: Tue, 25 Apr 2000 The Institute of Mathematics, University of Innsbruck, Austria, invites applications for a tenured faculty position at the Full Professor level in Applied and Computer-Oriented Mathematics. The duties of the new professor are: - Research in applied and computer-oriented mathematics. Areas of interest include but are not limited to mathematical methods of image processing, mathematics of information and communication, control theory, mathematics of neural sciences, optimization. - Teaching in applied mathematics, in particular for graduate students (diploma and PhD candidates), as well as an appropriate contribution to undergraduate teaching. - Establishing and promoting contacts with industry. Besides fullfilling the standard requirements applicants should preferably have experiences in co-operative projects with industry. Women are particularly encouraged to apply. Submit applications by June 9 to Dekan der Naturwissenschaftlichen Fakultät Univ.-Prof. Dr. Dietmar Kuhn Universität Innsbruck Innrain 52 A-6020 Innsbruck, Austria A detailed description of all requirements including application instructions is available at http://mathematik.uibk.ac.at/ 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: james beck Subject: IPIE contents Date: Fri, 31 Mar 2000 Inverse Problems in Engineering 2000 Volume 8, Number 2 Table of Contents Model Validation and Verification of Large and Complex Space Structures D. C. Zimmerman Projection Methods within Model Updating M. Oeljeklaus Model Updating of the Complex Modeshapes and the Damping Matrix Y. Halevi and R. Kenigsbuch Non-linear Inverse Compensation of an SI Engine by System Identification for Robust Performance Control A. P. Petridis and A. T. Shenton Estimation of Hysteretic Properties for Pseudo-elastic Materials, C. Song, J. A. Brandon and C. A. Featherston ------------------------------ From: Secretary Support - Magrijn Subject: MCSS volume 13 number 1 2000 Date: Tue, 18 Apr 2000 Mathematics of Control, Signals, and Systems 2000 Vol. 13, No. 1 Table of Contents O-minimal hybrid systems G. Lafferriere, G.J. Pappas and S. Sastry A convolution algebra of delay-differential operators and a related problem of finite spectrum assignability H. Gluesing-Luerssen Basic properties of the projective product with application to products of column-allowable nonnegative matrices F. Le Gland and L. Mevel Exponential forgetting and geometric ergodicity in hidden Markov models F. Le Gland and L. Mevel INFORMATION Information on MCSS including tables of contents is available at its home pages: www.cwi.nl/~schuppen/mcss/mcss.html www.math.rutgers.edu/~sontag/mcss.html Address for submissions: J.H. van Schuppen (Co-Editor MCSS) CWI P.O.Box 94079 1090 GB Amsterdam The Netherlands Bradley Dickinson, Eduardo Sontag, Jan van Schuppen (Editors) ------------------------------ From: Lothar Reichel To: ipnet-digest@math.msu.edu Subject: ETNA Date: Thu, 30 Mar 2000 Electronic Transactions on Numerical Analysis (ETNA) 2000 Vol. 10 Table of Contents ETNA is available at http://etna.mcs.kent.edu and several mirror sites as well as on CDROM. Special Issue on Multilevel Methods The Ninth Copper Mountain Conference on Multigrid Methods was held April 11-16, 1999, at Copper Mountain, Colorado, U.S.A.. The major theme of this meeting was "General Scalable Multigrid Methods: Algebraic Algorithms and Parallel Techniques". The seven papers in this volume were presented there and selected for publication in this dedicated issue. The range of topics covered by these papers demonstrates the breadth and strength of this still vibrant area of research. Seymour Parter, Guest Editor Tom Manteuffel and Steve McCormick, Conference Co-Chairs General highly accurate algebraic coarsening Achi Brandt Cache optimization for structured and unstructured grid multigrid Craig C. Douglas, Jonathan Hu, Markus Kowarschik, Ulrich Rude, Christian Weiss A parallel AMG for overlapping and non-overlapping domain decomposition Gundolf Haase Multilevel projection methods for nonlinear least-squares finite element computations Johannes Korsawe and Gerhard Starke A hybrid multigrid method for the steady-state incompressible Navier-Stokes equations Michael Pernice Behavior of plane relaxation methods as multigrid smoothers Ignacio M. Llorente and N. Duane Melson On preconditioning Schur complement and Schur complement preconditioning Jun Zhang ------------------------------ From: Hans Schneider Subject: LAA contents Volumes 308-310 Date: Wed, 12 Apr 2000 Linear Algebra and Its Applications April 2000 Vol. 308, Issue 1-3 Table of Contents Normal forms of generic triangular band matrices and Jordan forms of nilpotent completions MI Gekthman, L Rodman Generalized-confluent Cauchy and Cauchy-Vandermonde matrices Zhenghong Yang Pascal k-eliminated functional matrix and it's property M Bayat Matrix young inequalities for the Hilbert-Schmidt norm O Hirzallah, F Kittaneh Representation and approximation of the outer inverse A_T,S^(2) of a matrix A Yonglin Chen Metric projection and stratification of the Grassmannian M Finzel Spectrally arbitrary patterns JH Drew, P Van Den Driessche Decomposable numerical ranges on orthonormal tensors CK Li Estimates for the spectrum near algebraic elements Y Chen, T Ransford An extension problem for discrete-time almost periodically correlated stochastic processes D Alpay Pade approximation for the exponential of a block triangular matrix L Diece Notes on matrix arithmetic-geometric mean inequalities R Bhatia Linear Algebra and Its Applications April 2000 Vol. 309, Issue 1-3 Table of Contents Proceedings of the international worskhop on accurate solutions of eigenvalue problems Special editors: Jesse L. Barlow, Beresford N. Parlett, Kresimir Veslic Preface: The Accurate solution of Eigenvalue Problems JL Barlow Weyl-type relative perturbation bounds for eigenvalues of Hermitian matrices FM Dopico, JM Molera Optimal perturbation bounds for the Hermitian eigenvalue problem JL Barlow Absolute and relative perturbation bounds for invariant subspaces of matrices ICF Ipsen Relative perturbation theory for hyperbolic eigenvalue problem I Slapnicar Accuracy assessment for eigencomputations: variety of backward errors and pseudospectra F Chaitin-Chatelin, E Traviesas Perturbation theory for the eigenvalues of factorised symmetric matrices K Veselic Rounding-error and perturbation bounds for the indefinite QR factorization S Singer Relatively robust representations of symmetric tridiagonals BN Parlett QR factorization with complete pivoting and accurate computation of the SVD NJ Higham Exponential splittings of products of matrices and accurately computing singular values of long products S Oliveira, DE Stewart Approximate eigenvectors as preconditioner Z Drmac An implementation of dqds algorithm (positive case) BN Parlett Balancing sparse matrices for computing eigenvalues TY Chen, J Demmel Large sparse symmetric eigenvalue problems with homogeneous linear constraints: the Lanczos process with inner-outer iterations GH Golub, H Zha The influence of orthogonality on the Arnoldi method T Braconnier The relative error in the Pruess method for Sturm-Liouville problems P Kosowski Backward error and condition of polynomial eigenvalue problems F Tisseur Linear Algebra and its Applications May 2000 Volume 310, Issue 1-3 Table of Contents Introduction to a group of articles in tribute to Vlastimil Ptak H. Schneider A remark on the Jordan normal form of matrices V. Ptak On Ptak's derivation of the Jordan normal form C.de Boor Applications of the duality method to generalizations of the Jordan canonical form O. Holtz Circumstances of the submission of my paper in 1956 V. Ptak Vlastimil Ptak (8 November 1925 - 9 May 1999) M. Fiedler List of publications of Vlastimil Ptak, 1995-1999 M. Fiedler A modified Gram-Schmidt algorithm with iterative orthogonalization and column pivoting A. Dax On an operator inequality J. Singh Aujla Canonical forms for positive discrete-time linear control systems R. Bru, S. Romero, E. Sanchez Linear preservers of minimal rank L. Rodman, P. Semrl Superfast algorithms for Cauchy-like matrix computations and extensions V.Y. Pan, A. Zheng On the sequence of powers of a stochastic matrix with large exponent S. Kirkland A note on unsolvable systems of max-min (fuzzy) equations K. Cechlarova On maximal entries in the principal eigenvector of graphs B. Papendieck, P. Recht Commuting pairs and triples of matrices and related varieties R.M. Guralnick, B.A. Sethuraman Graph rigidity via Euclidean distance matrices A. Alfakih Numerical approximation of the product of the square root of a matrix with a vector E.J. Allen, J. Baglama, S.K. Boyd Poincare series of semi-invariants of 2x2 matrices M. Domokos 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 -------