Commit 2024-10-21 14:58 69a4014a
View on Github →chore(CategoryTheory/Adjunction): homEquiv_unit is no longer a global simp lemma (#17761)
This PR removes the global simp
attribute to lemmas homEquiv_unit
and homEquiv_counit
. These lemmas express the bijection homEquiv
in terms of the unit and counit of the adjunction. In situations where adjunctions are defined using the constructor mkOfHomEquiv
, we do not want these lemmas as global simp. However, when we study adjunctions defined using units and counits, or when proving general API results about them, they can be made local simp.