Let D bethesetofallnitesubsetsofpositiveintegers,and dene
Chapter 7, Problem 7.87(choose chapter or problem)
Let D bethesetofallnitesubsetsofpositiveintegers,and dene T:Z+ D by the rule: For all integers n, T(n) =the set of all of the positive divisors of n. a. Is T one-to-one? Prove or give a counterexample. b. Is T onto? Prove or give a counterexample.
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