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Results tagged with chromatic-polynomial
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Are the roots of chromatic polynomials plus a fixed constant dense in $\mathbb{C}$?
Alan Sokal proved that chromatic roots are dense in the whole complex plane. I.e., if $P(G;z)$ denotes the chromatic polynomial of a finite simple graph $G$ evaluated at $z \in \mathbb{C}$, then $$\b …
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