Let R be a commutative ring with unity u, and let I be an ideal of R.

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Let R be a commutative ring with unity u, and let I be an ideal of R.
(a) If u ∈ 1, prove that I = R.
(b) If I contains a unit of R, prove that I = R.

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Discrete and Combinatorial Mathematics An Applied Introduction

ISBN: 978-0201726343

5th edition

Authors: Ralph P. Grimaldi

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Question Posted: Jun 21, 2016 08:59 AM

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Let R be a commutative ring with unity u, and let I be an ideal of R.

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a I R For each r B ru r I so R I ...View the full answer

Discrete and Combinatorial Mathematics An Applied Introduction

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