English
The kernel of the total derivation equals the kernel of the linear combination map: kerTotal(R,S) = ker(Finsupp.linearCombination(S, D(R,S))).
Русский
Ядро полной производной равно ядру отображения линейной комбинации: kerTotal(R,S) = ker(Finsupp.linearCombination(S, D(R,S))).
LaTeX
$$$\\kerTotal(R,S) = \\ker(\\mathrm{Finsupp.linearCombination}\\,S\\,(\\mathrm{D}\\,R\\,S))$$$
Lean4
theorem map_surjective : Function.Surjective (KaehlerDifferential.map R S B B) :=
map_surjective_of_surjective R S B B Function.surjective_id