OAI/MathematicalPhysics/ContinuumCoulomb/OneParticle/GaussianScalar.lean

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Normalized Gaussian variance and energy on the real line.

  1. theorem OAI.ContinuumCoulomb.gaussianLine_expectation line 13
  2. theorem OAI.ContinuumCoulomb.gaussian_scalar_poincare_smooth line 38

    Source documentation

    The exact weighted Poincare constant for compact smooth real functions.

    theorem gaussian_scalar_poincare_smooth {freq : ℝ} (hf : 0 < freq)
        (f : ℝ → ℝ) (hs : ContDiff ℝ ∞ f) (hc : HasCompactSupport f) :
        (2*freq)*((∫ z : ℝ, verticalMode freq z^2*f z^2) -
          (∫ z : ℝ, verticalMode freq z^2*f z)^2) ≤
            ∫ z : ℝ, verticalMode freq z^2*(deriv f z)^2 := by
    …

    Mentions: OAI.ContinuumCoulomb.verticalMode