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goosethe@lemmy.sdf.org

Has someone written a proof of an empty Cartesian product of non-empty sets in ZF¬C? (lemmy.sdf.org)

submitted 1 year ago by CanadaPlus@lemmy.sdf.org to c/math@lemmy.sdf.org

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Paul Cohen I understand constructed such a set of axioms, which logically imply the existence of an evil set family like that. Constructive is of course preferred for extra WTF.

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