English
Closure forms a Galois insertion with the coercion to Set: the closure map is adjoint to the inclusion of Submonoid into Set.
Русский
Замыкание образует пожелательное вложение Галайса с включением в множество: отображение замыкания противостоит включению в множество.
LaTeX
$$GaloisInsertion(closure, SetLike.coe)$$
Lean4
/-- `closure` forms a Galois insertion with the coercion to set. -/
@[to_additive /-- `closure` forms a Galois insertion with the coercion to set. -/
]
protected def gi : GaloisInsertion (@closure M _) SetLike.coe
where
choice s _ := closure s
gc _ _ := closure_le
le_l_u _ := subset_closure
choice_eq _ _ := rfl