Suppose I know the chromatic polynomial $P(G, \lambda)$ of the graph $G$. Can we express the chromatic polynomial of the graph $G'$ in terms of $P(G, \lambda)$ and $\lambda$?
I have tried to apply the deletion-contraction but without any success.
2026-03-30 01:12:23.1774833143
Chromatic polynomial of simple graph
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