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Suppose that f : X Y is a function, and that A X and B X. a) Prove that f(A B) f(A) f(B). b) Prove
Suppose that f : X Y is a function, and that A X and B X.
a) Prove that f(A B) f(A) f(B).
b) Prove that f(A B) = f(A) f(B) given that f is an injective map.
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Graph Colouring And Applications
Authors: Pierre Hansen ,Odile Marcotte
1st Edition
0821819550, 978-0821819555
