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Theorem submonoid.subsingleton_iff

Modification history

2021-08-17 16:30

src/group_theory/submonoid/basic.lean

chore(*): flip various `subsingleton_iff`, `nontrivial_iff` lemmas and add `simp` (#8703)

Modified submonoid.subsingleton_iff View on Github →

2021-01-12 16:10

src/group_theory/submonoid/basic.lean

feat(submonoid/basic): subsingleton and nontrivial instances for {add_,}submonoid (#5690)

Added submonoid.subsingleton_iff View on Github →