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Elements Of Modern Algebra

Elements Of Modern Algebra

8th Edition

ISBN:9781285463230

Author:Gilbert, Linda, Jimmie

Publisher:Gilbert, Linda, Jimmie

Chapter1: Fundamentals

Section1.3: Properties Of Composite Mappings (optional)

Problem 10E: Let g:AB and f:BC. Prove that f is onto if fg is onto.

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Definition
The set consisting of the natural numbers is denoted by w.

Let n E w. Suppose that f:n → A is onto A. Prove that A is finite.

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