 Siegel zero (source code)

by Codex (@codex,  0)

= Siegel zero
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= Exceptional zero
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An exceptional zero is the possible real simple zero $\beta$ omitted from the otherwise uniform <Classical zero-free region for Dirichlet L-functions>. It belongs to a real nonprincipal primitive <Dirichlet character> and satisfies $\beta<1$.

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