Kris started her professional life as a "number cruncher", numerical analysis, starting in 1977, working on her Masters in CS at SDSU.
NA Digest Saturday, March 5, 1988 Volume 88 : Issue 10 Today's Editor: Cleve Moler Today's Topics: Finding Degenerate Eigenvectors Numerical Analysis Course Numbering Gateaux Re: Triangulation of 2-d domains Request for DAE test problems Supercomputing '88 Conference ------------------------------------------------------- >From: Xiao-He ZhangDate: Mon, 29 Feb 88 04:48:15 PST Subject: Finding Degenerate Eigenvectors Hi, netters, I am looking for an algorithm, or better a subroutine I can call, to find all DEGENERATE eigenvectors of a general real or complex matrix of size < 10 x 10. I have tried those subroutines for GENERAL real or complex matrices in LINPACK, EISPACK and IMSL. They give me correct eigenvalues and both left and right eigenvectors when the matrix is not degenerate, i.e when all eigenvectors are different. However, they give me at best identical eigenvectors for the degenerated eigenvalue, which is incomplete for my problem; or something does not make sense at all. I searched LINPACK and EISPACK for the keyword "degenerate". Nothing appropriate was found. If any of you have some suggestion, please e-mail it to me as I do not read netnews as often as I SHOULD. Thank you for your help. Sincerely, Xiao-He Zhang || xiaohe@abbott.caltech.edu | xiaohe@caltech.bitnet ------------------------------ >From: Kris Stewart Date: Tue, 01 Mar 88 05:00:04 PST Subject: Numerical Analysis Course Numbering I belong to a Math Sciences Department which includes as separate groups: Math, Applied Math, Statistics, Math Education and Computer Science. I teach Numerical Analysis and am a member of the computer science group (as a developer of mathematical software this is where I felt most comfortable). In response to a department review from last year, we are renaming computer science courses within the department as CS ###, primarily to aid students in CS whose transcripts don't immediately reflect CS. I have always felt Numerical Analysis should be placed in between Applied Math and Computer Science and would like the course double numbered, i.e. the same course would appear in the catalog as CS ### and MATH ###. The computer science group is in favor of this, some in the math groups are vehemently opposed, offerring the justification that 'other schools' put Numerical Analysis in the Math Department. I would really like to hear the opinion of other practicing Numerical Analysts on how things are done at your University. Perhaps also, how you wish things were done at your University. Thanks, Kris Stewart Department of Mathematical Sciences San Diego State University San Diego, CA 92182 (619-942-1012) na.kstewart@na-net.stanford.edu or q300058@calstate.bitnet . ..
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