OAI/GroupTheory/PolycyclicRecognition/Analysis/MeanProbabilityConverse.lean
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Mean error implies convergence in probability
- theorem
OAI.PolycyclicRecognition.bad_probability_tendsto_zero_of_meanline 14Source documentation
Markov's inequality gives the probability direction for an integrable nonnegative profile error, without a global bound off its sampling cell.
theorem bad_probability_tendsto_zero_of_mean {X : Type*} [MeasurableSpace X] (μ : ℕ → ProbabilityMeasure X) (f : ℕ → X → ℝ) (hi : ∀ n, Integrable (f n) (μ n : Measure X)) (hf : ∀ n, 0 ≤ᵐ[(μ n : Measure X)] f n) (hm : Tendsto (fun n => ∫ x, f n x ∂(μ n : Measure X)) atTop (𝓝 0)) {ε : ℝ} (hε : 0 < ε) : Tendsto (fun n => (μ n : Measure X) {x | ε ≤ f n x}) atTop (𝓝 0) := by …