Grundy Number Calculator

worst-case greedy colors

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About Grundy Number Calculator

A Grundy number calculator computing Γ(G): maximum number of colors used by ANY greedy (first-fit) coloring over all vertex orderings. χ(G) ≤ Γ(G) ≤ Δ(G)+1. NP-hard to compute. Measures worst-case greedy coloring quality. Client-side.

Grundy Number Calculator Features

  • Γ(G) value
  • Worst ordering
  • χ ≤ Γ ≤ Δ+1
  • NP-hard
  • Common graphs

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