this post was submitted on 13 Dec 2023
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Apparently this reminder is needed.

It is a meme.

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[–] bort@feddit.de 7 points 11 months ago (2 children)

A set can totally contain itself. A better question would be: Consider a set, that contains all sets, that do not contain themself. Would that set contain itself?

[–] lugal@sopuli.xyz 6 points 11 months ago

It would. Source: I just shaved my beard

[–] hglman@lemmy.ml 3 points 11 months ago

Yes, just relax the axiom of comprehension, allow U ∈ U and move on with proving things for fun and profit. No one said that you have to pick axioms that seem natural or intuitive.