From NA-Request@Score.Stanford.EDU Sat Jan 9 00:23:38 1988 Return-Path: Received: from dasher.mcs.anl by rudolph.mcs.anl (3.2/SMI-3.2) id AA17616; Sat, 9 Jan 88 00:23:35 CST Received: from anl-mcs.ARPA by dasher.mcs.anl (3.2/SMI-3.2) id AA02335; Sat, 9 Jan 88 00:20:30 CST Received: from Score.Stanford.EDU (score.stanford.edu.ARPA) by anl-mcs.ARPA (4.12/4.9) id AA05335; Sat, 9 Jan 88 00:21:19 cst Message-Id: <8801090621.AA05335@anl-mcs.ARPA> Date: Fri 8 Jan 88 21:29:01 PST Subject: NA Digest V88 #2 From: NA Digest Errors-To: NA-request@Score.Stanford.EDU Maint-Path: NA-request@Score.Stanford.EDU To: NA.Distribution.List:;@anl-mcs.ARPA Reply-To: NA@Score.Stanford.edu Status: R NA Digest Friday, January 8, 1988 Volume 88 : Issue 2 This weeks Editor: Cleve Moler Today's Topics: Department Head at Clemson Large eigenvalue problems Senior Numerical Analyst Seeking Position Stewart's Temporary Electronic Address Position at Bristol Golub's New Temporary Address ---------------------------------------------------------------------- Date: Tue, 5 Jan 88 10:42 EST From: James Jarvin Subject: Department Head at Clemson To: na@score.stanford.EDU X-VMS-To: IN%"na@score.stanford.edu" DEPARTMENT HEAD MATHEMATICAL SCIENCES DEPARTMENT CLEMSON UNIVERSITY Applications and nominations are invited for the position of Department Head. Qualifications include a Ph.D. degree, teaching experience, proven research ability, and leadership capacity. Administrative experience is highly desirable but not required. The Mathematical Sciences Department has 46 faculty members and over 100 graduate students. It offers a broad program in the mathematical sciences including B.A., B.S., M.S., and Ph.D. degree programs for its majors; provides service courses for students in science, engineering, and education curricula; and jointly administers a Ph.D. program in Management Science with the Management Department. Clemson's Department of Mathematical Sciences has pioneered the concept of integrating major areas of the mathematical sciences - algebra/combinatorics, analysis, computational mathematics, operations research, and probability/statistics - into balanced educational programs at both the undergraduate and graduate levels. A candidate is sought who is committed to working with the faculty to foster these programs and who will provide leadership for the future development of the Department. Initial screening of applicants will begin in early March 1988 but applications will be accepted until March 28, 1988. The position will be available August 1, 1988. Salary will be commensurate with credentials and experience. Vitae (with names and telephone numbers of three references who will be contacted after the initial screening of applicants), nominations, and requests for further information should be sent to: Professor James P. Jarvis, Chairman Department Head Search Committee Department of Mathematical Sciences O-102 Martin Hall Clemson, SC 29634-1907 Clemson University is an AA/EO Employer ------------------------------ Date: Tue, 5 Jan 88 14:30 CST From: Peter Arnold Subject: Large eigenvalue problems To: NA@Score.Stanford.EDU Does anyone know the answer to the following question? I need to efficiently find the largest real eigenvalue of large (1000x1000) real, but not symmetric, matricies. The matricies will in general have both real and complex eigenvalues, but I'm only interested in the real ones. I need the value to only a few percent. Is there any way to do this more efficiently than finding *all* of the eigenvalues using a canned routine? Please reply to ZOCKUS@FNAL on BITNET or FNAL::ZOCKUS on DECNET. -- Peter Arnold, MS #106, Fermilab, P.O. Box 500, Batavia, IL 60510 (312) 840-3750 ------------------------------ Date: Mon, 04 Jan 88 17:25:59 GMT To: na@score.stanford.edu Subject: Senior Numerical Analyst Seeking Position From: John Greenstadt A NOTICE FROM JOHN GREENSTADT, WHO IS LOOKING FOR A JOB BACK IN THE STATES. After 33 years, I left IBM at the end of 1985 to be able to concentrate on developing my Cell Discretization algorithm. Thanks to Mike Powell, I have spent the last two years as a Research Fellow at Cambridge University in the Department of Applied Mathematics and Theoretical Physics (DAMTP). I am expecting to return to the US at the end of July 1988. Some of you know me on the basis of my past work on matrix eigenvalues and various areas of optimization, but I have concentrated almost all my efforts in recent years on the development of Cell Discretization (CD), which is a generalization of the Finite Element Method. During my stay here at Cambridge, I have been able to complete the formulation of the the CD algorithm to cover nonselfadjoint systems of elliptic partial differential equations, and I have drastically restructured my Fortran program so that it can handle these cases. My preliminary results on a few model boundary-layer problems are quite encouraging. I plan next to incorporate a simple adaptive quadrature into my program, so that I can handle special nonpolynomial representations with my program. This should enable me to handle re-entrant corners (including cracks) and steep fronts, for example, without the use of very fine domain partitioning (refined grids). By the use of a special range-space/null-space transformation, the discretization process of CD decouples almost completely into a set of independent cell-by-cell computations, eminently suited to parallel processing. The key paper describing the basic procedure for selfadjoint equations is in: SIAM Journal on Scientific and Staistical Computing, vol. 3, pp 261-288 (1982). I am quite happy with the way things are turning out, and would like to find a spot in a university or a national laboratory where there is interestin developing a new method of this sort. I would naturally be very happy to teach students this method, and I am keenly aware that there are very many problems still to be tackled in connection with CD, most of which would be suitable for dissertations. I would prefer to be located in Northern California, where my present home is, but I would certainly consider seriously any position which would offer me the chance to develop and teach the cell method. If anyone has a position of this kind available, or knows of one, I would be very glad to hear from him/her. I would also be very happy to send a curriculum vitae and a few of my best papers to anyone who thinks he/she might have a possible position available in the fall. My address in Cambridge is: John Greenstadt Department of Applied Mathematics and Theoretical Physics (DAMTP) Silver Street Cambridge CB3 9EW England and my network addresses are: NA.GREENSTADT@EDU.STANFORD.SCORE JG105@UK.AC.CAM.PHX ------------------------------ Date: Thu, 7 Jan 88 11:40:11 EST From: G. W. Stewart To: na@score.stanford.edu Subject: Stewart's Temporary Electronic Address The University of Maryland CS Department is moving to new quarters, and our workstations will be down--perhaps until the end of the month. Please address email to stewart@brillig.umd.edu or use the nanet (na.pstewart). Thank you. Pete Stewart Thanks for the trouble. Pete Stewart. ------------------------------ Date: Thu, 7 Jan 88 12:30:51 EST From: Gene Golub To: na@score.stanford.edu Subject: Position at Bristol UNIVERSITY OF BRISTOL DEPARTMENT OF MATHEMATICS Applications are invited for a LECTURESHIP in NUMERICAL ANALYSIS. Applicants should have a good research record and be likely to interact with present members of the Department. The Salary Scale for lecturers is UK pounds 8,735 - 18,210 (under review) and the initial salary will be determined according to qualifications and experience. The post is tenable from 1 April 1988 or a mutually agreeable date. Further particulars should be obtained from the Registrar and Secretary, University of Bristol, Senate House, Bristol BS8 1TH, England, by whom applications should be received before 19 February 1988, quoting reference JC. Informal enquiries will be welcomed - please contact Andy Wathen by electronic mail (na.wathen) or by phone, the UK telephone number is 0272 303313. ------------------------------ Date: Thu, 7 Jan 88 15:19:46 EST From: Gene Golub To: NA@score.stanford.edu Subject: Golub's New Temporary Address Please note that my office address and phone number have changed. Gene Gene H. Golub Until June 1, 1988 Office: UMIACS - 3159 A V Williams Bldg University of Maryland College Park, MD 20742 (301) 454-1993 golub@mimsy.umd.edu or na.golub@score.stanford.edu Home: The Flour Mill 1015 33rd St NW, #402 Washington, DC 20007 (202) 337-6396 ------------------------------ End of NA Digest ************************** -------