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Refactor QuotientAddGroup.continuousAddEquiv #341

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kbuzzard opened this issue Feb 10, 2025 · 0 comments
Open

Refactor QuotientAddGroup.continuousAddEquiv #341

kbuzzard opened this issue Feb 10, 2025 · 0 comments

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@kbuzzard
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This def in FLT/Mathlib/Topology/Algebra/Group/Quotient.lean should be refactored so that (a) it is a lemma about multiplicative groups (and the original def is obtained using @[to_additive]) and (b) it uses comap instead of map i.e. AddSubgroup.comap e H' = G'.
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