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Commit 2022-04-25 17:22 4e50b688

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feat(category_theory/abelian): if D is abelian so is C ⥤ D (#13686) Needed for LTE, and also useful to show Rep k G is abelian.

Estimated changes

Created src/category_theory/abelian/functor_category.lean

added theorem category_theory.abelian.functor_category.coimage_image_comparison_app'

added theorem category_theory.abelian.functor_category.coimage_image_comparison_app

added def category_theory.abelian.functor_category.coimage_obj_iso

added def category_theory.abelian.functor_category.image_obj_iso

Modified src/category_theory/limits/preserves/shapes/kernels.lean

deleted theorem category_theory.limits.preserves_cokernel.iso_hom

added theorem category_theory.limits.preserves_cokernel.iso_inv

Created src/category_theory/limits/shapes/functor_category.lean

Modified src/category_theory/limits/shapes/kernels.lean

added def category_theory.limits.cokernel.map_iso

added def category_theory.limits.kernel.map_iso