English
There exists a canonical left-invariant Haar measure ω.measure on an alternating map ω with finite rank based on a chosen basis.
Русский
Существует каноническая левая инвариантная мера Хаара ω.measure на чередующейся карте ω с конечной размерностью, базисом.
LaTeX
$$IsAddLeftInvariant ω.measure$$
Lean4
/-- The Lebesgue measure associated to an alternating map. It gives measure `|ω v|` to the
parallelepiped spanned by the vectors `v₁, ..., vₙ`. Note that it is not always a Haar measure,
as it can be zero, but it is always locally finite and translation invariant. -/
noncomputable def _root_.AlternatingMap.measure :=
val_proj @wrapped✝.{}