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Theorem Set.empty_is_transitive

Modification history

2023-01-26 09:45
src/set_theory/zfc/ordinal.lean
chore(set_theory/zfc/basic): `mem_empty` → `not_mem_empty` (#18262) …
Modified Set.empty_is_transitiveView on Github →
2022-07-21 13:52
src/set_theory/zfc/ordinal.lean
feat(set_theory/zfc/ordinal): more lemmas on transitive sets (#15548) …
Added Set.empty_is_transitiveView on Github →