OAI/MathematicalPhysics/Boltzmann/Branching/Moments.lean

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Integrable moments of finite-entropy data

The weighted entropy assumption from the manuscript controls mass, kinetic energy, absolute entropy, and vector momentum. These conclusions use the actual integrability assumption rather than any default value of a Bochner integral.

  1. theorem OAI.BoltzmannNonuniqueness.entropyMoment_nonneg line 19
  2. theorem OAI.BoltzmannNonuniqueness.density_le_entropyMoment line 24
  3. theorem OAI.BoltzmannNonuniqueness.energyDensity_le_entropyMoment line 30
  4. theorem OAI.BoltzmannNonuniqueness.absEntropyDensity_le_entropyMoment line 35
  5. theorem OAI.BoltzmannNonuniqueness.momentumDensity_norm_le_entropyMoment line 40
  6. theorem OAI.BoltzmannNonuniqueness.FiniteEntropyDatum.integrable line 54

    Source documentation

    Finite weighted entropy gives finite mass.

    theorem integrable : Integrable f := by
    …
  7. theorem OAI.BoltzmannNonuniqueness.FiniteEntropyDatum.integrable_energy line 60

    Source documentation

    The energy functional integrates an integrable density.

    theorem integrable_energy : Integrable (fun z => ‖z.2‖ ^ 2 * f z) := by
    …
  8. theorem OAI.BoltzmannNonuniqueness.FiniteEntropyDatum.integrable_absEntropy line 68

    Source documentation

    This is absolute entropy, including the convention at zero from the model.

    theorem integrable_absEntropy : Integrable (fun z => f z * |Real.log (f z)|) := by
    …
  9. theorem OAI.BoltzmannNonuniqueness.FiniteEntropyDatum.integrable_momentum line 79

    Source documentation

    The vector momentum integral is a genuine Bochner integral.

    theorem integrable_momentum : Integrable (fun z => f z • z.2) := by
    …
  10. theorem OAI.BoltzmannNonuniqueness.FiniteEntropyDatum.integrable_entropy line 85