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Hints Homework 5

September 21, 2011

Problem 4

Let {S} be a family of nonempty sets. To find a choice function on {S}, let P = { f : f is a choice function on some Z \subset S}, and apply Zorn’s Lemma to the partially ordered set {(P,\subset)}.

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One Comment
  1. Injee permalink

    thanks!!

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