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Question: a let s sy be an isomorphism of s...

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(a) Let ф. S sy be an isomorphism of (S*) with (S,*) . Suppose that for each S. Prove that for each d є S, y *, y-d has 4. CE S, a solution y E S T*r- c has a solution x E (b) Is C under multiplcation isomorphic to R under multiplication? [Hint: Use part

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