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Commit 2022-03-08 17:53 1d67b07c

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feat(category_theory): cases in which (co)equalizers are split monos (epis) (#12498)

Estimated changes

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

added theorem category_theory.limits.cofork.is_colimit.π_desc_of_π

added theorem category_theory.limits.fork.is_limit.lift_of_ι_ι

added def category_theory.limits.split_epi_of_coequalizer

added def category_theory.limits.split_epi_of_idempotent_coequalizer

added def category_theory.limits.split_epi_of_idempotent_of_is_colimit_cofork

added def category_theory.limits.split_mono_of_equalizer

added def category_theory.limits.split_mono_of_idempotent_equalizer

added def category_theory.limits.split_mono_of_idempotent_of_is_limit_fork