The number of coloured neighbours of minus the number of distinct colours on those neighbours. Repeated colours among pairwise nonadjacent neighbours reduce the number of unavailable colours without increasing the number of neighbours still to colour.

Ancestors (8)

  1. Extension of a partial colouring by neighbour-colour savings
  2. Greedy coloring
  3. Graph coloring
  4. Graph theory
  5. Foundations of mathematics
  6. Area of mathematics
  7. Mathematics
  8. Home

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