English
The carrier of max s t equals the closure of the carrier of s.toSubmodule ⊔ t.toSubmodule.
Русский
Carrier максимума s и t равен замыканию carrier(s.toSubmodule ⊔ t.toSubmodule).
LaTeX
$$$\uparrow(\operatorname{ClosedSubmodule.max}(s,t)) = closure (s.toSubmodule \sqcup t.toSubmodule).carrier$$$
Lean4
@[simp, norm_cast]
theorem coe_sup : ↑(s ⊔ t) = closure (s.toSubmodule ⊔ t.toSubmodule).carrier :=
by
simp only [← coe_toSubmodule, toSubmodule_sup]
simp only [coe_toSubmodule, Submodule.coe_closure, Submodule.carrier_eq_coe]