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LeanPool.ArnoldKAM.Arnold1963.Analysis.ParameterIntegral

Analyticity of integrals over compact parameter sets, obtained by lifting local power series and passing through a bounded integral linear map.

theorem KamProject.Arnold1963.analyticAt_integral_compact {X : Type u_1} {E : Type u_2} {F : Type u_3} [TopologicalSpace X] [MeasurableSpace X] [OpensMeasurableSpace X] [NormedAddCommGroup E] [NormedSpace ℂ E] [NormedAddCommGroup F] [NormedSpace ℂ F] {μ : MeasureTheory.Measure X} [MeasureTheory.IsFiniteMeasure μ] {f : E × F → ℂ} {g : X → F} {p : E} (hg : Continuous g) {K : Set X} (hK : IsCompact K) (hKm : MeasurableSet K) (hf : ∀ t ∈ K, AnalyticAt ℂ f (p, g t)) :
AnalyticAt ℂ (fun (a : E) => ∫ (t : X) in K, f (a, g t) ∂μ) p