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Theorems · Theorem · number theory

DirichletCharacter.LFunction_ne_zero_of_one_le_re

∀ {N : ℕ} (χ : DirichletCharacter ℂ N) [inst : NeZero N] ⦃s : ℂ⦄,
  χ ≠ 1 ∨ s ≠ 1 → 1 ≤ s.re → DirichletCharacter.LFunction χ s ≠ 0

If χ is a Dirichlet character, then L(χ, s) does not vanish for s.re ≥ 1 except when χ is trivial and s = 1 (then L(χ, s) has a simple pole at s = 1).

Defined in
Mathlib.NumberTheory.LSeries.Nonvanishing
Cited by
5 results in Mathlib
Foundations
Depth 317 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
NeZero

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