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Theorem not_injective_of_ordinal_of_small

Modification history

2022-02-01 09:01
src/set_theory/cardinal_ordinal.lean
feat(set_theory/{ordinal_arithmetic, cardinal_ordinal}): Ordinals aren't a small type (#11756) …
Modified not_injective_of_ordinal_of_smallView on Github →
2021-09-30 08:02
src/set_theory/cardinal_ordinal.lean
feat(set_theory/cardinal_ordinal): there is no injective function from ordinals to types in the same universe (#9452) …
Added not_injective_of_ordinal_of_smallView on Github →