P(x) = x ∉ x ⊃ for any set A, there is a set B such that x ∈ B iff x ∈ A and x ∉ x(adsbygoogle = window.adsbygoogle || []).push({});

Does the above mean that different things can bear the same property. For instance, x can be bipedal means x can be an element of the set human or x can be an element of the set ostrich.

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# Axiom schema of comprehension

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