English
IsScalarTower lifts to ZeroHom: with SMul M N and IsScalarTower M N B, we have IsScalarTower M N (ZeroHom A B).
Русский
IsScalarTower поднимается до ZeroHom: при наличии SMul M N и IsScalarTower M N B имеем IsScalarTower M N (ZeroHom A B).
LaTeX
$$[SMul M N] [SMulZeroClass M B] [SMulZeroClass N B] [IsScalarTower M N B] : IsScalarTower M N (ZeroHom A B)$$
Lean4
instance [SMul M N] [SMulZeroClass M B] [SMulZeroClass N B] [IsScalarTower M N B] : IsScalarTower M N (ZeroHom A B)
where smul_assoc _ _ _ := ext fun _ => smul_assoc _ _ _