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def definition def or abbrev

X_var

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formal statement (Lean)

  10noncomputable def X_var (k a tau0 : ℝ) : ℝ := (k * tau0) / a

proof body

Definition body.

  11
  12/-- A function Q(a, k) satisfies X-reciprocity if there exists a function Q_tilde
  13    such that Q(a, k) = Q_tilde (X_var k a tau0). -/

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