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Unformatted text preview: for f if g ◦ f = Id X , and it is called a right inverse for f if f ◦ g = Id Y . (a) If there exists a right inverse for f , prove that f is surjective. (b) If there exists a left inverse for f , prove that f is injective....
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This note was uploaded on 12/08/2009 for the course MATH 300 taught by Professor Staff during the Spring '08 term at University of Washington.
- Spring '08