English
The underlying set of the bottom StarSubalgebra equals the range of the algebra map: ((⊥ : StarSubalgebra R A) : Set A) = Set.range (algebraMap R A).
Русский
Множество, лежащее в основе нижней StarSubalgebra, равно образу алгебраического отображения R → A.
LaTeX
$$$ ((\\bot : StarSubalgebra\\; R\\; A) : Set\\; A) = \\operatorname{range}(\\mathrm{algebraMap}\\; R\\; A) $$$
Lean4
@[simp, norm_cast]
theorem coe_bot : ((⊥ : StarSubalgebra R A) : Set A) = Set.range (algebraMap R A) :=
rfl