How to do symbolic matrix computations on MMA?
- To: mathgroup at christensen.cybernetics.net
- Subject: [mg347] How to do symbolic matrix computations on MMA?
- From: Fedor G. Pikus <pikus at heron.physics.ucsb.edu>
- Date: Tue, 20 Dec 94 12:27:05 -0800
Hi,
I have a question to ask:
I need to use MMA to do computations on expressions which contain
matrices. I would like not to substitute the elements of matrices,
but rather call each matrix with a name and teach MMA how to handle that.
Here is an example of what I want to do:
I have matrices a, b, c, d.
I want to calculate (a+b)^2.
First, I want to teach MMA that a and b do not commute, so the
result is a^2 + ab + ba + b^2.
Now, I know that, for example, a^2 = 1, ab = c, ba=-c, b^2=d. so,
I want to have the answer 1 + d.
How can I do it?
Thanks, Fedor
--
Fedor G. Pikus
6113 Broida Hall 312 Ellwood Beach Dr. #18
Department of Physics Goleta, California 93117
University of California home phone: (805) 968-3361
Santa Barbara, California 96103 office phone: (805) 893-4072
e-mail: pikus at physics.ucsb.edu FAX : (805) 893-8422