English
For IsProbabilityMeasure μ and SigmaFinite ν, under μ ≪ ν and hν, the integral identity holds: ∫ llr(μ, ν.tilted f) dμ equals a combination of ∫ llr μ ν dμ, ∫ f dμ and log(∫ e^{f} dν).
Русский
Пусть μ — вероятность мер и ν сигма-конечна; при μ ≪ ν выполняется связанная формула для интеграла llr(μ, ν.tilted f).
LaTeX
$$$\\int llr(μ, ν.tilted f) \\, dμ = \\int llr(μ, ν) \\, dμ - \\int f \\, dμ + \\log\\left(\\int e^{f} \\, dν\\right)$$$
Lean4
/-- The pushforward of a measure. It is defined to be `0` if `f` is not an almost everywhere
measurable function. -/
noncomputable def map :=
val_proj @wrapped✝.{}