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9. If A and B are submodules of M prove (a) An B is a submodule...

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9. If A and B are submodules of M prove (a) An B is a submodule of M. (b) A + B = {a + bla € A, be B} is a submodule of M. (c

9. If A and B are submodules of M prove (a) An B is a submodule of M. (b) A + B = {a + bla € A, be B} is a submodule of M. (c) (A + B)/B is isomorphic to A (A B).

Answers

19 IG A and B are submodules of M. AOB is a sub module of M Costerion for Submodule: het R be a sing & M be an. R-module. A s

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