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Commit 2021-03-20 17:42 d6506747

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feat(category_theory/subterminal): subterminal category equiv subobjects of terminal (#6755)

Estimated changes

Modified src/category_theory/subterminal.lean

added theorem category_theory.mono_over_terminal_to_subterminals_comp

added def category_theory.subterminals_equiv_mono_over_terminal

added theorem category_theory.subterminals_to_mono_over_terminal_comp_forget