Title credit: u/AngelicDimsum

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[–] 0 points 2 months ago (2 children)

Isn't four {{{{{}}}}}? The diagram shows more than that.

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  • [–] 2 points 2 months ago (1 child)

    It could be defined that way. But your set is in a way more difficult to resolve as it has only one element. In the diagram the number of elements (4 sets) of the set is equal to the number 4 i.e. a set defines a number by simply counting its elements.

    There are probably some other nice properties if you define it that way.

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