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B is not the identity matrix or the zero matrix
suppose both A and B are 3X3
I don't have clue on this..any hits?
suppose both A and B are 3X3
I don't have clue on this..any hits?
it is given A find B such that AB=BA..
what is the obvious choice...
Uh? *any* polynomial in A commutes with A (dunno what the k has to do with anything).
Does nobody read the f**king posts before them and try to figure out if they've answered the question or not?
I read all of the posts and nobody appeared to answer the posters question to satisfaction. Such anger, I would have expected a better show from someone with such credentials as "homework helper" and "science advisor."
Any polynomial in A will do, as has been said many times in this thread. (I think this is about the 3rd time I've said it.)
I would also like to point out that hotcommodity's suggested solution is precisely the first one given in the thread in post 2 by d_leet as well, which is what really annoyed me even more than ignoring the better and easier methods.
There may have been easier methods, but seeing as it is early in the school semester and the poster may not be familiar with the other methods, I gave a detailed solution involving elementary terms and operations.
enough already! this is a boring question!
here is a more interesting one: prove that a holomorphic map of a riemann surface to itself that induces the identity on homology is the identity map.