Let A and B be finite sets, and let f : A B be a function.
Question:
Let A and B be finite sets, and let f : A → B be a function. Show that
a. if f is injective, then |A| ≤ |B|;
b. if f is surjective, then |A| ≥ jBj.
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a If f is injective then for any two elements a1 a...View the full answer
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Related Book For
Introduction to Algorithms
ISBN: 978-0262033848
3rd edition
Authors: Thomas H. Cormen, Charles E. Leiserson, Ronald L. Rivest
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