English
Given an equivalence of cocone categories e: Cocone K ≌ Cocone J, the collection of IsColimit structures on a cocone is equivalent when transported along the equivalence to the other cocone.
Русский
Дано эквивалентность категорий коконов e: Cocone K ≌ Cocone J; передачи структур IsColimit через эквивалент дают эквивалентность IsColimit на коконе.
LaTeX
$$$ \text{equivIsoColimit} : IsColimit r \cong IsColimit t $$$
Lean4
/-- Isomorphism of cocones preserves whether or not they are colimiting cocones. -/
def equivIsoColimit {r t : Cocone F} (i : r ≅ t) : IsColimit r ≃ IsColimit t
where
toFun h := h.ofIsoColimit i
invFun h := h.ofIsoColimit i.symm
left_inv := by cat_disch
right_inv := by cat_disch