Commit 2026-09-07 10:31 c74949bb
View on Github →chore(CategoryTheory/Limits/HasLimits): use to_dual more (#42872)
This PR continues the work of #41017 to use to_dual in CategoryTheory.Limits.HasLimits.
Notes:
- A few theorems like
ι_isoOfEquivalence_homhas their type changed, because the old version wasn't actually dual to the supposed dual version. As a result, a proof inMathlib/CategoryTheory/Limits/Shapes/Products.leancould be simplified. - A few theorems like
isoOfNatIso_ι_homwere renamed toι_isoOfNatIso_hom, which is a more accurate name.