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Commit 2020-12-01 20:05 41e0903f

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feat(category_theory/limits/preserves): preserving equalizers (#5044) Constructions and lemmas about preserving equalizers

Estimated changes

Created src/category_theory/limits/preserves/shapes/equalizers.lean

added def category_theory.limits.is_limit_fork_map_of_is_limit

added def category_theory.limits.is_limit_map_cone_fork_equiv

added def category_theory.limits.is_limit_of_has_equalizer_of_preserves_limit

added def category_theory.limits.is_limit_of_is_limit_fork_map

added def category_theory.limits.preserves_equalizer.iso

added theorem category_theory.limits.preserves_equalizer.iso_hom

added def category_theory.limits.preserves_equalizer.of_iso_comparison

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