Theorem CategoryTheory.GradedObject.TriangleIndexData.r_zero

Modification history

2024-06-09 23:30
Mathlib/CategoryTheory/GradedObject/Unitor.lean
feat(CategoryTheory/GradedObject): the triangle equality (#11687) …
Added CategoryTheory.GradedObject.TriangleIndexData.r_zeroView on Github →