English
The smul action on functions commutes with evaluation on the tensor product: $(r\cdot f)^{\mathrm{toFun}'}_S(m)=r\cdot f^{\mathrm{toFun}'}_S(m)$.
Русский
Действие смулятора на функции commuting с вычислением на тензорном произведении: $(r\cdot f)^{\mathrm{toFun}'}_S(m)=r\cdot f^{\mathrm{toFun}'}_S(m)$.
LaTeX
$$$\forall S, (r\cdot f)^{\mathrm{toFun}'}_S = r\cdot f^{\mathrm{toFun}'}_S$.$$
Lean4
theorem smul_def_apply (S : Type u) [CommSemiring S] [Algebra R S] (m : S ⊗[R] M) :
(r • f).toFun' S m = r • f.toFun' S m :=
rfl