Prove 1. Let f : A→ B and g : B → C . If g...

Prove

1. Let f : A→ B and g : B → C . If g 。 f is one-to-one, then f is one-to-one.

2. Equivalence of sets is an equivalence relation (you may use other theorems without stating them for this one).

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Expert Solution

Colby Messinger answered 1 year ago

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