English
If M is Noetherian as an R-module, then any submodule N ≤ M is Noetherian as an R-module.
Русский
Если модуль M является Ноетеровым как R-модуль, то любой подмодуль N ⊆ M также Ноетеров.
LaTeX
$$$\text{If } IsNoetherian(R,M) \text{ and } N \le M,\ text{ then } IsNoetherian(R,N)$$$
Lean4
/-- Modules over the trivial ring are Noetherian. -/
instance (priority := 100) isNoetherian_of_subsingleton (R M) [Subsingleton R] [Semiring R] [AddCommMonoid M]
[Module R M] : IsNoetherian R M :=
haveI := Module.subsingleton R M
isNoetherian_of_finite R M