 Real Dirichlet character (source code)

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= Real Dirichlet character

A real Dirichlet character takes values in $\{0,1,-1\}$. Its restriction to the unit group has order at most two; if it is nonprincipal, the order is exactly two. A real nonprincipal <primitive Dirichlet character> is the character to which a possible <Siegel zero> belongs.

// Target: analytic-number-theory.bigb

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