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Ideals and Rings : Homomorphisms

Problem:
Prove the Second Isomorphism Theorem: If A is an ideal of R and S is a subring of R, then S+A is a subring, A, and (S intersecting A) are ideals of S+A and S, respectively, and (S+A)/A isomorphic to A/(S intersecting A).

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Solution Summary

The Second Isomorphism Theorem is proven.

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