If R is a ring and a R, then J = {r R| ra =
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If R is a ring and a ϵ R, then J = {r ϵ R| ra = 0} is a left ideal and K = {r ϵ R|ra = 0| is a right ideal in R.
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To show that J r R ra 0 is a left ideal in R we need to show that J satisfies the two conditions ...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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