English
Let β be a complete lattice. For every function f: α → β, the essential infimum of f with respect to the zero measure on α equals the top element ⊤ of β.
Русский
Пусть β — полная решётка. Для любой функции f: α → β эсс-инфимум f по нулевой мере равен верхней границе ⊤ данной решётки.
LaTeX
$$$$ \\operatorname{essInf} f (0 : \\mathrm{Measure} \\alpha) = \\top $$$$
Lean4
@[simp]
theorem essInf_measure_zero {_ : MeasurableSpace α} {f : α → β} : essInf f (0 : Measure α) = ⊤ :=
@essSup_measure_zero α βᵒᵈ _ _ _