openAI-math-dataset / lean /OAI /Probability /InvariantIsing /Core /FiniteSpectrumVariationalUpper.lean
| import OAI.Probability.InvariantIsing.Core.FiniteSpectrumUpper | |
| import OAI.Probability.InvariantIsing.Core.FiniteVariationalBounds | |
| namespace OAI | |
| /-! The finite-spectrum pressure upper bound after taking the path infimum. -/ | |
| noncomputable section | |
| open MeasureTheory ProbabilityTheory IsingPerceptron Set Filter | |
| open scoped BigOperators Topology | |
| namespace InvariantIsing | |
| theorem finiteSpectrum_meanPressure_variational_upper | |
| (hhaar : HaarConcentrationInput) (hgauss : GaussianLipschitzVarianceInput) | |
| (N : ℕ → ℕ) (hN : ∀ k, 3 ≤ N k) (hNlim : Tendsto N atTop atTop) (m : ℕ) | |
| (μ : (k : ℕ) → Measure (SpecialOrthogonal (N k))) [∀ k, IsProbabilityMeasure (μ k)] | |
| (hμinv : ∀ k, (μ k).IsMulLeftInvariant) | |
| (eig : (k : ℕ) → Fin (N k) → ℝ) | |
| (K : ℝ) (hK : 0 < K) (heig : ∀ k i, |eig k i| ≤ K) | |
| (I : (k : ℕ) → Fin m → Finset (Fin (N k))) | |
| (hdis : ∀ k, Set.PairwiseDisjoint (Set.univ : Set (Fin m)) (I k)) | |
| (hcover : ∀ k, Finset.univ.biUnion (I k) = Finset.univ) | |
| (lam : Fin m → ℝ) (hlam : ∀ k a i, i ∈ I k a → eig k i = lam a) | |
| (ρ : Fin m → ℝ) (hρpos : ∀ a, 0 < ρ a) (hρsum : ∑ a, ρ a = 1) | |
| (hρ : Tendsto (fun k a => ((I k a).card : ℝ) / N k) atTop (𝓝 ρ)) : | |
| ∀ ε : ℝ, 0 < ε → ∀ᶠ k in atTop, | |
| (∫ U : SpecialOrthogonal (N k), | |
| rotatedPressure (eig k) (specialRotation U) (fun _ => 0) ∂μ k) ≤ | |
| (variationalFunctional (finiteR ρ lam hρpos hρsum)).toReal + ε := by | |
| intro ε hε | |
| obtain ⟨p, S, hS, hp⟩ := exists_finiteEntropy_trial_near_finiteVariational | |
| ρ lam hρpos hρsum (half_pos hε) | |
| have hup := finiteSpectrum_meanPressure_upper hhaar hgauss N hN hNlim m μ hμinv | |
| eig K hK heig I hdis hcover lam hlam ρ hρpos hρsum hρ p S hS.le (ε / 2) (half_pos hε) | |
| filter_upwards [hup] with k hk | |
| linarith | |
| end InvariantIsing | |
| end | |
| end OAI | |