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Commit 2021-04-09 03:28 29b834df

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feat(category_theory, algebra/category): AddCommGroup is well-powered (#7006)

Estimated changes

Created src/algebra/category/Group/subobject.lean

Modified src/category_theory/subobject/mono_over.lean

added def category_theory.mono_over.congr

added theorem category_theory.mono_over.lift_obj_arrow

modified def category_theory.mono_over.map_iso

Modified src/category_theory/subobject/well_powered.lean

added theorem category_theory.well_powered_congr

added theorem category_theory.well_powered_of_equiv