English
The fixingSubgroup of an iUnion equals the infimum of fixingSubgroups over the index.
Русский
FixingSubgroup iUnion равен инфимину fixingSubgroup по индексу.
LaTeX
$$$fixingSubgroup(M, \\bigcup_i s_i) = \\bigwedge_i fixingSubgroup(M, s_i)$$$
Lean4
/-- `MulActionHomClass F M X Y` states that `F` is a type of
morphisms which are equivariant with respect to actions of `M`
This is an abbreviation of `MulActionSemiHomClass`. -/
@[to_additive /-- `MulActionHomClass F M X Y` states that `F` is a type of
morphisms which are equivariant with respect to actions of `M`
This is an abbreviation of `MulActionSemiHomClass`. -/
]
abbrev MulActionHomClass (F : Type*) (M : outParam Type*) (X Y : outParam Type*) [SMul M X] [SMul M Y]
[FunLike F X Y] :=
MulActionSemiHomClass F (@id M) X Y
