English
If f and g are almost everywhere such that their ENorm values are equal almost everywhere, then eLpNorm f equals eLpNorm g.
Русский
Если значения ENorm функции совпадают почти всюду, то eLpNorm соответствующих функций совпадает.
LaTeX
$$$\text{If } \forall^{\mathrm{a}} x, \; \|f(x)\|_{e} = \|g(x)\|_{e}, \text{ then } eLpNorm\; f\; p\; μ = eLpNorm\; g\; p\; μ.$$$
Lean4
theorem eLpNorm_congr_enorm_ae {f : α → ε} {g : α → ε'} (hfg : ∀ᵐ x ∂μ, ‖f x‖ₑ = ‖g x‖ₑ) :
eLpNorm f p μ = eLpNorm g p μ :=
le_antisymm (eLpNorm_mono_enorm_ae <| EventuallyEq.le hfg) (eLpNorm_mono_enorm_ae <| (EventuallyEq.symm hfg).le)