alaj5280 alaj5280
  • 27-03-2024
  • Mathematics
contestada

Let x bea finite set. Let ,S be the subset of p(x) defined by
S={AinP(x)||A| is odd }.
Prove that |S|=|Px/LS|.
Prove that if X is afinite set, and S,subex with S≠x, then |S|<|x|.

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