E-LETTER on Systems, Control, and Signal Processing ISSUE No. 12, 14 July 1988 Editors: Bradley W. Dickinson Dept. of Electrical Engineering Princeton University Princeton, NJ 08544 bradley@princeton.edu Eduardo D. Sontag Dept. of Mathematics Rutgers University New Brunswick, NJ 08903 sontag@fermat.rutgers.edu (arpanet) or sontag@pisces (bitnet) Welcome to the twelfth issue of the E-LETTER. We remind you that items for posting can be emailed to either of the editors. PLEASE SEND CONTRIBUTIONS, since the eletter can only be useful if everyone participates! Back issues of the newsletter can be requested from Sontag at either of the above addresses. NOTE: if you are using an editor to read this mailing and if at any point you wish to skip to the next article, you can accomplish this by searching for the string: *.** Contents Changes to mailing list Calls for Papers: JULY 15 DEADLINES! Allerton Conference on Communication, Control, and Computing Cornell Summer Workshop on Systems, Control, and Communications Linear Algebra and its Applications editorial changes Physical and Systems Mathematics, Inc. announcement Linear Algebra Prize awarded to James Demmel (one of our subscribers!) NATO ASI on Orthogonal Polynomials and Their Applications 1989 International Symposium on on the Mathematical Theory of Networks and Systems (MTNS) Position Available: EE Dept. Chair at Ohio State University Linear and Nonlinear Mathematical Control Theory Workshop proceedings available MCSS -- advance table of contents Conference on Numerical Solutions of Partial Differential Equations *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** CHANGES TO MAILING LIST The following are changes to the mailing list which was included with issue #2. An up-to-date copy of the complete list can be obtained from sontag@fermat.rutgers.edu. As usual, you may have to adjust the format depending on your mailer. Here we mix uucp, csnet, and arpanet formats. Corrected and updated addresses: stengel@pucc.bitnet (Rob Stengel) kuh@wiliki.eng.hawaii.edu (Tony Kuh) garber@dandy.eng.ohio-state.edu (Fred D. Garber) naito%titisa.is.titech.junet@uunet.uu.net (Koichiro Naito) cao@antare.dec.com (Xi-Ren Cao) cao%antare.dec@decwrl.dec.com (Xi-Ren Cao) mehrmann@dhdibm1.bitnet (Volker Mehrmann) (until 31 March 1989) mat2@itopoli.bitnet (shared by Andrea Bacciotti, P. Boieri, Luciano Pandolfi) The addresses of everyone at "@zuring.cwi.nl" should be changed to "@boring.cwi.nl" Additions: dahleh@ee.tamu.edu (Mohammed Dahleh) spm101@phys2.anu.oz.au (Sean Meyn) f1kieff@vax.ee.umn.edu (John Kieffer) df12@dfvlrop1.bitnet (Jurgen Ackermann) df1s@dfvlrop1.bitnet (Kehui Wei) bamieh@zeta.rice.edu (Bassam Bamieh) csun!polyslo!cmaccarl@hplabs.uucp (Carl A. MacCarley) csun!polyslo!aassal@hplabs.uucp (Amr Assal) ytl@thumper.bellcore.com (Yi-Teh Lee) malcolm@eagle.eng.ohio-state.edu (Malcolm C. Smith) randy@sleepy.eng.ohio-state.edu (Randy Moses) luc@mujunior.cs.mcgill.ca (Luc Devroye) cak@thumper.bellcore.com (Candace Kamm) m.davis@vaxa.cc.imperial.ac.uk (Mark Davis) davison@eleca.ele.toronto.edu (Ted Davison) kahnes@ogcapee.ogc.edu (Steve Kahne) kaoru@jpntscvm.bitnet (Kaoru Okumura) wang@ncsumath.bitnet (Wang Li) l-ljung@linnea.liu.se (Lennart Ljung) autmail@nimbus.ethz.ch (Karl Heinz Kienitz) munnari!nucs.oz.au!evans (Rob Evans) munnari!karri.eecs.unsw.oz.au!johnk (John Kaye) brualdi@weaver.math.wisc.edu (Richard Brualdi) agw@columbia.edu (Art Werschulz) pgn@osupyr.mast.ohio-state.edu (Paul Nevai) ts1171@ohstvma.bitnet (Paul Nevai) ucla-an!steve@ee.ucla.edu (Steve Jenkins) rajeev@tesla.ee.cornell.edu (Rajeev Krishnamoorthy) mar23aa@technion.bitnet (International Matrix Group - IMG) ufcmst@ufeng.bitnet (Center for Mathematical System Theory, Gainesville) Deletions: kohavi@techsel.bitnet (Zvi Kohavi) *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** >From the Editors: Calls for Papers with July 15 deadlines. Twenty-Sixth Annual Allerton Conference on Communication, Control, and Computing, Sept. 28 - 30, 1988, Allerton Park, IL. Regular papers: submit two copies of a 5 to 10 page extended abstract. Short papers: submit two copies of a 1000 word summary. Deadline: July 15, 1988. Send submissions to Allerton Conference, c/o Prof. M. W. Spong, University of Illinois, Coordinated Science Lab, 1101 W. Springfield Ave., Urbana, IL 61801. Email: spong!uicsl@a.uiuc.edu (Full announcement in issue 10 of the E-LETTER) The Fourth Annual CORNELL SUMMER WORKSHOP ON SYSTEMS, CONTROL, AND COMMUNICATIONS will be held on Monday and Tuesday, 15 and 16 August 1988, at the School of Electrical Engineering, Cornell University, Ithaca, New York. Prospective attendees are invited to submit titles and one-page abstracts about their research by no later than 15 July 1988 to David F. Delchamps, School of Electrical Engineering, Cornell University, Phillips Hall, Ithaca, New York 14853, (607) 255-6447. Email: dave@kafka.ee.cornell.edu [or dave@tesla.ee.cornell.edu] (Full announcement in issue 11 of the E-LETTER) Information about hotel accommodations will be forwarded in conjunction with acknowledgment of receipt of submissions. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** From: brualdi@weaver.math.wisc.edu (Richard Brualdi) Linear Algebra and its Applications is pleased to announce the appointment of Rajendra Bhatia of the Indian Statistical Institute in New Delhi, India as an associate editor and the appointment of Peter Lancaster of the University of Calgary as an advisory editor. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** >From Robert Hermann; May 15, 1988 Announcement. The Association for Physical and Systems Mathematics, Inc. will change its name to Physical and Systems Mathematics, Inc. This reflects the current involvement with research projects rather than activities that characterize an Association. It remains a nonprofit corporation, with headquarters at 53 Jordan Road, Brookline, MA 02146, tel. (617) 738-0307 and Forest Rim J-2, Waterville Valley, NH, tel. (603) 236-4152. Robert Hermann, Director *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** From: MAR23AA@technion.bitnet: IMG-NET Message No. 22 The first SIAG/LA Linear Algebra Prize was presented to James Demmel for his paper "On Condition Numbers and the Distance to the Nearest Ill-Posed Problem", Numer. Math. 51 (1987), 251-289. The Prize Plaque and Citation were presented to Demmel by SIAG/LA Chair Bob Ward at the Third SIAM Conference on Applied Linear Algebra held in Madison, Wisconsin, May 23-26, 1988. After the ceremony, Demmel gave a stirring half-hour account of his work in the area of the prize paper. The winning paper was selected by a Prize Committee consisting of Dave Carlson (chair), Ake Bjorck, Gene Golub, Roger Horn, and Tom Kailath. Altogether there were 23 1986 and 1987 papers in applicable linear algebra nominated. Preliminary judging by 3 subcommittees narrowed the field to 6 finalist papers: Demmel's paper, together with T. Ando, Roger Horn and Charles Johnson, The singular values of a Hadamard product: a basic inequality, Lin. Multilin. Alg. 21(1987), 345-366. Thomas Coleman and Alex Pothen, The null space problem I.Compexity, SIAM J. Alg. Disc. Meth. 7(1986), 527-537. Pamela Coxson, Loren Larson, and Hans Schneider, Monomial patterns in the sequence Akb, Lin. Alg. Appl. 94(1987), 89-101. Chris Paige, Computing the generalized singular value decomposition, SIAM J. Sci. Stat. Comput. 7(1986), 1126-1146. Ion Zaballa, Matrices with prescribed rows and invariant factors", Lin. Alg. Appl. 87(1987), 113-146. (Horn did not take part in the final judging). Future Linear Algebra Prizes will be awarded every two years by the SIAG/LA. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** From Paul Nevai (pgn@osupyr.mast.ohio-state.edu) A N N O U N C E M E N T NATO Advanced Study Institute (Paul Nevai, Director) on Orthogonal Polynomials and Their Applications The Ohio State University, Columbus, Ohio 43210, U. S. A. May 22, 1989 - June 3, 1989. Main Subjects: Orthogonal Polynomials and Their Applications in Approximation Theory, Coding Theory,Combinatorics, Communication Engineering, Continued Fractions, Difference Equations, Julia Sets, Nuclear Physics, Numerical Analysis, Pade Approximations, Potential Theory, Prediction Theory, Rational Approximation, Recursions, Representation Theory, Scattering Theory, Signal Processing, Solid State Physics and Special Functions. Organizing Committee: M. Ismail, P. Nevai (Director) and D. Stanton Principal Speakers: D. Bessis, W. Gautschi, Y. Genin, R. Haydock, T. Koornwinder, D. S. Lubinsky, I. Macdonald, E. A. Rahmanov, E. B. Saff, H. Stahl, and G. Viennot Attendance is strictly by application/invitation only, and it is limited to approximately one hundred participants. Partial financial support available for graduate students and scientists from NATO nations (and possibly from other countries as well) on a "first come first serve" basis. Information: OPsConf c/o Paul Nevai Department of Mathematics The Ohio State University 231 West Eighteenth Avenue Columbus, Ohio 43210-1174 United States of America Email: ts1171@ohstvma.bitnet pgn@osupyr.mast.ohio-state.edu Phone: 1-(614)-292-4975 1-(614)-292-5310 *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** >From schuppen@cwi.nl (Jan H. van Schuppen) FIRST ANNOUNCEMENT AND CALL FOR PAPERS 1989 International Symposium on the Mathematical Theory of Networks and Systems (MTNS-89) June 19-23, 1989, Amsterdam, The Netherlands Aim of Symposium The symposium offers researchers, mathematicians and engineers in system, control and circuit theory, a platform to discuss recent developments, to exchange new ideas and to analyse trends for further research. It also provides them with an opportunity to establish and maintain contacts with colleagues. Scientific Program of the Symposium - Plenary lectures by invited speakers - Parallel lectures by invited speakers - Two Mini Courses - Invited Sessions on new developments - Contributed lectures on current research themes - Poster sessions - Demonstrations of computers and software Research Topics These include: System theory, Control, Circuit theory, Mathematics for control, system and circuit theory, Specific applications. Information To obtain the printed version of the First Announcement and Call for Papers, that contains instructions for authors of full papers, posters, and organizers of special sessions, write to: Stichting International Symposium MTNS-89 c/o Bureau Congreszaken (Conference Service) Vrije Universiteit P.O. Box 7161 1007 MC Amsterdam The Netherlands A Call for Papers has been distributed by use of several mailing lists in May 1988. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** From: randy@sleepy.eng.ohio-state.edu (Randy Moses) Position Available: CHAIRPERSON, ELECTRICAL ENGINEERING The Ohio State University, Department of Electrical Engineering, is seeking nominations and applications for the position of Department Chairperson, effective sometime after Jan. 1, 1989. The qualifications desired include an earned doctorate in either electrical or computer engineering; a strong commitment to teaching and curriculum development at both the graduate and undergraduate levels; a distinguished record in research, scholarly publications, and the procurement of external funding; a commitment to professional activities; demonstrated leadership and administrative abilities in government service, industry, or academia; and a strong interest in enhancing the department's reputation. The department consists of 46 faculty, a permanent support staff of 48, and over 1000 undergraduate and 250 graduate students. Traditionally, there has been a strong emphasis on both effective teaching and outstanding research. External funding for the latter, which is in excess of $5.5 million annually, involves major support in electromagnetics and robotics and substantial support in biomedical engineering, communications, computer engineering, control, electro-optics, electric power systems, and solid-state microelectronics. Commensurate with this level of research activity, the department has impressive facilities, including 3 buildings and extensive computer resources. The latter includes a VAX 8550, a VAX 11/785, a Hypercube, and over 40 high-performance workstations, all networked via ETHERNET. The latter is linked, via the OSU fiber optic network, to such external networks as ARPANET and BITNET. The Ohio State University also maintains extensive computing facilities including a supercomputer (soon to be upgraded to a Cray Y/MP). Interested applicants should submit resumes, which include the names of at least three references, to Professor Robert E. Fenton, Chairman, Search Committee, Department of Electrical Engineering, The Ohio State University, 2015 Neil Avenue, Columbus, Ohio 43210-1272, (614) 292-4310. Interviews will be conducted starting the summer of 1988 and will continue until the position is filled. The Ohio State University is an Affirmative Action/Equal Opportunity Employer. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** >From Luciano Pandolfi (mat2@itopoli.bitnet) The Proceedings of the workshop LINEAR AND NONLINEAR MATHEMATICAL CONTROL THEORY is now available as a special issue of RENDICONTI DEL SEMINARIO MATEMATICO-UNIVESRITA E POLITECNICO DI TORINO. These proceedings contains the invited lessons to the workshop. The table of contents is as follows: CROUCH, P.E., Graded vector spaces and applications to the approximation of nonlinear systems (p. 1-54); FLIESS, M. Esquisse pour une theorie des systemes en temps discret (p. 55-67); FUHRMANN, P.A., Orthogonal Matrix polynomials and systems Theory (p. 68-124) KAMEN, E.W., The poles and zeros of a linear time varying system (p. 125-148); SUSSMANN, H.J., Recent developments in the regularity theory of optimal trajectories (p. 149-182); VIDYASAGAR, M., The stable factorization approach to linear multivariable systems (p. 183-209). The proceedings can be ordered from ROSENBERG & SELLIER, VIA A. DORIA 14, 10123 TORINO, Italy. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** Contributed by the Editors ADVANCE TABLE OF CONTENTS OF MCSS, Volume 1, Number 3: Persistency of Excitation Criteria for Linear, Multivariable, Time Varying Systems I.M.Y. Mareels and M. Gevers pp. 203-226 Minimal Polynomial Realizations Z. Bartosiewicz pp. 227-237 Controllability and Stability Radii for Companion Form Systems C. Kenney and A.J. Laub pp. 239-256 Nonlinear Decoupling and Structure at Infinity Claude H. Moog pp. 257-268 On Parameter Dependence of Solutions of Algebraic Riccati Equations A.C.M. Ran and L. Rodman pp. 269-284 Pole Shifting FOr Families of Systems: the Dimension One Case J. Brewer and L. Klinger pp. 285-292 Controllability of Right-Invariant Systems on Real Simple Lie Groups of Type $F_4$, $G_2$, $C_n$, and $B_n$ R. El-Assoudi and J.P. Gauthier pp. 293-301 *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** >From the Editors Conference on Numerical Solutions of Partial Differential Equations, Sept. 24-27, 1988. Sponsored by: Interdisciplinary Center for Applied Mathematics and Department of Mathematics, Virginia Polytechnic Institute and State University, Blacksburg, VA. Abstract deadline: August 12, 1988. For information, call Nancy D. Smith, (703)-961-7667. *.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.** End of issue 12.