Mathlib v3 is deprecated. Go to Mathlib v4

Commit 2021-04-26 13:34 35b9d9c4

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feat(group_theory/finiteness): add submonoid.fg (#7279) I introduce here the notion of a finitely generated monoid (not necessarily commutative) and I prove that the notion is preserved by additive/multiplicative. A natural continuation is of course to introduce the same notion for groups.

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