Let R be a ring with unity 1. If 1 has infinite order under addition then the characteristic of R is 0. If 1 has order n under addition , then the characteristic of R is n.
Let R be a ring with unity 1. If 1 has infinite order under addition then the characteristic of R is 0. If 1 has order n under addition , then the characteristic of R is n.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Let R be a ring with unity 1. If 1 has infinite order under addition then the characteristic of R is 0. If 1 has order n under addition , then the characteristic of R is n.
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