Theorem Semigrp.forget_map

Modification history

2026-04-14 15:27
Mathlib/Algebra/Category/Semigrp/Basic.lean
refactor(CategoryTheory): one-field structure morphisms in the category of types (#36613) …
Deleted Semigrp.forget_mapView on Github →
2025-02-03 16:47
Mathlib/Algebra/Category/Semigrp/Basic.lean
feat(Algebra/Category): `ConcreteCategory` instance for `Semigrp` (#21368) …
Added Semigrp.forget_mapView on Github →