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def definition def or abbrev

frobeniusAngle

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formal statement (Lean)

  40def frobeniusAngle (q : ℕ) (a : ℤ) : ℝ :=

proof body

Definition body.

  41  Real.arccos ((a : ℝ) / (2 * Real.sqrt (q : ℝ)))
  42
  43/-- The Hasse--Weil bound: `a^2 ≤ 4 q`, equivalently `|a| ≤ 2 √q`. -/

used by (4)

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