Prove the following statements: (a) If f : A → B and g : B → C are one-to-one functions, then go f: A → C is one-to-one.
Prove the following statements: (a) If f : A → B and g : B → C are one-to-one functions, then go f: A → C is one-to-one.
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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Transcribed Image Text:Prove the following statements:
(a) If f : A → B and g : B → C are one-to-one functions, then go f : A → C is one-to-one.
(b) Use the definition to prove that for any sets A, B and C' if |A| < |C| and |C| < |B| then |A| < |B|.
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