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| 2010-12-31 09:45:58 +0200 | answered a question | Constructing a morphism of free modules using the indexing set Thanks, that seems to work! |
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| 2010-12-28 09:46:12 +0200 | asked a question | Constructing a morphism of free modules using the indexing set I have a set S indexed by triplets of numbers [i,j,k], and I want to construct an endomorphism T of the free module over S (call it F(S)) of the form: T: e[i,j,k] ---> Sum over (u,v,w) : f(i,j,k, u,v,w) e[u,v,w] where f(ijkuvw) is a certain function. Is there a simple way to do this? Thanks! |
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