The axioms of Zermelo-Fraenkel set theory don't admit the construction of a "set... | Hacker News

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qntm on July 4, 2012 | parent | context | favorite | on: Godel's 2nd Incompleteness Theorem Explained in Wo...

The axioms of Zermelo-Fraenkel set theory don't admit the construction of a "set of all sets that don't contain themelves".

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