English
For s ∈ S and a ∈ 𝓜(𝕜,A), the scalar action commutes with toProd: (s • a).toProd = s • a.toProd.
Русский
Для s ∈ S и a ∈ 𝓜(𝕜,A) скалярное действие коммутирует с toProd: (s • a).toProd = s • a.toProd.
LaTeX
$$$$ (s \\cdot a)^{\\text{toProd}} = s \\cdot a^{\\text{toProd}} $$$$
Lean4
instance instSMul : SMul S 𝓜(𝕜, A) where
smul s
a :=
{ toProd := s • a.toProd
central := fun x y =>
show (s • a.snd) x * y = x * (s • a.fst) y by
simp only [ContinuousLinearMap.smul_apply, mul_smul_comm, smul_mul_assoc, central] }