English
The zero-Hom space from A to B is a module over R given appropriate semiring and module structures.
Русский
Пространство нулевых гомоморфизмов From A to B образует модуль над R при заданных структурах полукольца и модуля.
LaTeX
$$$$ \\text{ZeroHom}(A,B) \text{ is an } R\text{-module}. $$$$
Lean4
instance instModule [Semiring R] [AddMonoid A] [AddCommMonoid B] [Module R B] : Module R (ZeroHom A B)
where
__ : MulActionWithZero _ _ := ZeroHom.instMulActionWithZero
add_smul _ _ _ := ext fun _ => add_smul _ _ _
smul_add _ _ _ := ext fun _ => smul_add _ _ _