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Topic: matrix analysis: can I say matrix X=Y if I have AXA=AYA?
Replies: 8   Last Post: Mar 12, 2004 9:37 AM

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Richard Tobin

Posts: 1,436
Registered: 12/6/04
Re: matrix analysis: can I say matrix X=Y if I have AXA=AYA?
Posted: Mar 10, 2004 6:15 PM
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In article <QPL3c.225598$jk2.928031@attbi_s53>,
Francis Harrington <f.harrington@comcast.net> wrote:

>Where has my reasoning gone wrong here? Suppose all matrices are square,
>and that AXA = AYA is true. If I pre- and post-multiply both sides by A-inv,
>I get X = Y. Thanks for your advice on this.


What if A does not have an inverse?

-- Richard




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