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23 Jun 2021
Let A, B be nonempty sets and a, b ∉ A, 1, 2 ∉ B. Show that if A ~ B, then A ∪ {a, b} ~ B ∪ {1,2}
Let A, B be nonempty sets and a, b ∉ A, 1, 2 ∉ B. Show that if A ~ B, then A ∪ {a, b} ~ B ∪ {1,2}
24 Jun 2021
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