English
The underlying value of iInf f equals iInf of the underlying values: (iInf f).val = iInf (f i).val.
Русский
Значение iInf f равно инфимуму значений f i: (iInf f).val = ⨅ i, (f i).val.
LaTeX
$$$(\operatorname{iInf} i, f(i)).\text{val} = \operatorname{iInf}_i (f(i)).\text{val}$$$
Lean4
@[simp, norm_cast]
theorem coe_iInf (f : ι → S) : (⨅ i, f i).val = ⨅ i, (f i).val := by simp [iInf, ← range_comp, Function.comp_def]