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Use this tag for questions about mathematical or logical foundations of proof assistants. Questions should be related in some way to proof assistants. Possible topics might include mathematical modelling, consistency and computability, universes, etc.

7 votes
3 answers
230 views

Why is $\Bbb Z = \Bbb N$ independent of Lean?

In this answer, it is noted For a silly example, in ZFC with the usual encoding, $\mathbb{Z} \neq \mathbb{N}$, but in Lean it is well-known that this is independent. Of course in both ZFC or Lean, o …
Mike Battaglia's user avatar