OAI/Geometry/RCD/Heat/GaussianLinearGrowth.lean

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3 declarations, 0 contain sorry, 0 declared as axioms

Global exponential volume growth is absorbed by Gaussian decay

  1. theorem OAI.RegularPointCoordinates.linear_sub_quadratic_le line 15

    Source documentation

    Completing the square leaves half of the Gaussian exponent available.

    theorem linear_sub_quadratic_le (A s : ℝ) {c : ℝ} (hc : 0 < c) :
        A * s - c * s ^ 2 ≤ A ^ 2 / (2 * c) - (c / 2) * s ^ 2 := by
    …
  2. theorem OAI.RegularPointCoordinates.summable_gaussian_with_linear_growth line 25

    Source documentation

    A fixed exponential volume factor in the shell radius does not spoil summability of any geometric normalization loss.

    theorem summable_gaussian_with_linear_growth {b c : ℝ} (hb : 0 ≤ b) (hc : 0 < c) (A : ℝ) :
        Summable (fun j : ℕ => b ^ j * Real.exp (A * 2 ^ j - c * 4 ^ j)) := by
    …
  3. theorem OAI.RegularPointCoordinates.summable_shell_with_linear_growth line 45

    Source documentation

    The first shell includes the pole; all later shells still allow a global hyperbolic exponential factor in their radius.

    theorem summable_shell_with_linear_growth {b c : ℝ} (hb : 0 ≤ b) (hc : 0 < c) (A : ℝ) :
        Summable (fun j : ℕ => b ^ j * Real.exp (A * 2 ^ j) * gaussianShellFactor c j) := by
    …

    Mentions: OAI.RegularPointCoordinates.gaussianShellFactor