OAI/GroupTheory/PolycyclicRecognition/Geometry/CartanPolarSourceVolumes.lean

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2 declarations, 0 contain sorry, 0 declared as axioms

Source volume and tile count with the same actual exponent

  1. theorem OAI.PolycyclicRecognition.CartanWordModel.polar_source_kernel_exponent line 34

    Source documentation

    The source ideal exponent equals the ambient template exponent at the actual first radius. This is the equality needed for volume cancellation.

    theorem polar_source_kernel_exponent
        (bN : Basis (Fin (finrank ℝ (cartanRootIdeal H))) ℝ (cartanRootIdeal H))
        (bI : Basis (Fin (finrank ℝ (M.coneWordIdeal C))) ℝ (M.coneWordIdeal C))
        (β : M.ConeIdealBases C)
        (hβ : M.IsMaximizingConeIdealBasis C bI (M.polarProbeWidths T hunimod eW K) β)
        {ε : ℝ} (hε : 0 ≤ ε) :
        (∑ j, M.coneIdealWordCost C
          ((M.supportIn T hunimod eW).weightSupport (normalizedPolarTemplates K ε 0))
          (β.val j)) = (M.supportIn T hunimod eW).templateSupport
            (normalizedPolarTemplates K ε 0) := by
    …

    Mentions: OAI.PolycyclicRecognition.cartanRootIdeal, OAI.PolycyclicRecognition.normalizedPolarTemplates

  2. theorem OAI.PolycyclicRecognition.CartanWordModel.polar_source_cell_volumes line 52

    Source documentation

    The positive source coefficient and the exact source exponential rate are derived for the kernel measure actually used in the source count.

    theorem polar_source_cell_volumes
        (eI : M.coneWordIdeal C ≃ₗ⁅ℝ⁆ GroupLieAlgebra (𝓘(ℝ, EI)) I)
        (ExpI : GroupLieAlgebra (𝓘(ℝ, EI)) I → I) (hExpI : IsGroupExponential ExpI)
        (haarI : NilpotentExponentialHaarInput EI I)
        (chartI : GroupLieAlgebra (𝓘(ℝ, EI)) I ≃ₜ I) (hchartI : ∀ v, chartI v = ExpI v)
        (π : F.N.carrier →* Q) (ι : I →* F.N.carrier)
        (hι : Topology.IsClosedEmbedding ι) (hrange : range ι = (π.ker : Set F.N.carrier))
        (μI : Measure I) [μI.IsHaarMeasure]
        (μQ : Measure Q) [μQ.IsOpenPosMeasure] [IsFiniteMeasureOnCompacts μQ]
        {d : ℕ} (eQ : (Fin d → ℝ) ≃ₜ Q)
        (bN : Basis (Fin (finrank ℝ (cartanRootIdeal H))) ℝ (cartanRootIdeal H))
        (bI : Basis (Fin (finrank ℝ (M.coneWordIdeal C))) ℝ (M.coneWordIdeal C))
    …

    Mentions: OAI.PolycyclicRecognition.NilpotentExponentialHaarInput, OAI.PolycyclicRecognition.cartanRootIdeal