(a) If R 1 . ... , R n are rings with identity and I is an...
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(a) If R1. ... , Rn are rings with identity and I is an ideal in R1 X --· X Rn, then I = A1 X · · · X Am, where each Ai is an ideal in Ri.
(b) Show that the conclusion of (a) need not hold if the rings Ri do not have identities.
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ANSWER a Suppose that R1 Rn are rings with identity and let I be an ideal in R1 x x Rn Let i R1 x x ...View the full answer
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Related Book For
Algebra Graduate Texts In Mathematics 73
ISBN: 9780387905181
8th Edition
Authors: Thomas W. Hungerford
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