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A proof assistant is software used for creating and checking formal proofs; examples include Coq and HOL. This tag is not to be used for requesting assistance on finding proofs. General questions about proof assistants can also be asked on the Proof Assistants Stack Exchange site.

4 votes

Which mathematical definitions should be formalised in Lean?

Sorry for asking a question here but it is too long for a comment. Or maybe if you tell me it's wrong, I'll delete it and I could post it as a regular question in MathOverflow instead. What is th …