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From: wjh@bonnie.UUCP (Bill Hery)
Newsgroups: net.math.symbolic,net.math
Subject: Symbolic math package for linear algebra
Message-ID: <555@bonnie.UUCP>
Date: Tue, 10-Sep-85 15:35:11 EDT
Article-I.D.: bonnie.555
Posted: Tue Sep 10 15:35:11 1985
Date-Received: Wed, 11-Sep-85 05:28:21 EDT
Organization: AT&T Bell Laboratories, Whippany NJ
Lines: 21
Xref: watmath net.math.symbolic:101 net.math:2246

Can anyone recommend a symbolic math package for the following linear 
algebra problem:

Solve (and simplify the solution) a set of N+1 linear equations in N 
variables (known to have a unique solution) of the form Ax=0, where 
A is sparse, and after the first n rows, a 3 by 9 block keeps repeating
along the diagonal (except for the last set of three rows).  The 
coefficients are to be given in two parmeters, and I would like to 
get x in terms of those parameters. N will be up to about 100.

Ideally, I would like to enter the coefficients (in terms of the two
parameters) into a matrix as is done in Lotus, Visicalc, etc.

I would also prefer a package that is already available within Bell
Labs, and which will let me get through enough of the documentation
to solve this problem very quickly.

Bill Hery
ATT Bell Labs, Whippany
201-386-2362
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