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Theorem is_add_submonoid_Union_of_directed

Modification history

2019-08-21 05:42
src/group_theory/submonoid.lean
refactor(*): rewrite `to_additive` attribute (#1345) …
Deleted is_add_submonoid_Union_of_directedView on Github →
2019-04-07 16:29
src/group_theory/submonoid.lean
feat(subgroup, subring, subfield): directed Unions of subrings are subrings (#889)
Added is_add_submonoid_Union_of_directedView on Github →