Hi guys, Can you please check this basic set theory/function proof? Let . Then for some . So we have that . Now implies that, for every such that , , in particular, . Thus , hence so that
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Originally Posted by james121515 Can you please check this basic set theory/function proof? Let . Then for some . So we have that . Now implies that, for every such that , , in particular, . Thus , hence so that I think it can be shorter. implies that So that or .
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