Thursday, April 2, 2009

8.2, due on April 3

Difficult: So I hope we don't have to reprove the theorems, because I really didn't understand most of the proofs, but I think I got what the theorems were saying.

Reflective: So basically finite abelian groups are direct sums of cyclic groups and each has a unique set of elementary divisors. Two finite abelian groups are only isomorphic if they have the same elementary diviors. Right?

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