Prove the given statements of function f

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Question: Suppose that f is a function from the set A to the set B. Prove that

a) if f is one-to-one, then Sf is a one-to-one function from P(A) to P(B).

b) if f is onto function, then Sf is an onto function from P(A) to P(B).

c) if f is onto function, then Sf -1 is a one-to-one function from P(B) to P(A).

d) if f is one-to-one, then Sƒ -1 is an onto function from P(B) to P(A).

e) if f is a one-to-one correspondence, then Sƒ is a oneto-one correspondence from P(A) to P(B) and Sƒ -1 is a one-to-one correspondence from P(B) to P(A).

Reference no: EM131568169

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