Perfect Graph Checker

χ = ω everywhere

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About Perfect Graph Checker

A perfect graph checker testing if χ(H)=ω(H) for all induced subgraphs H. SPGT (Chudnovsky et al., 2006): perfect iff no odd hole or odd antihole. Polynomial recognition. Includes bipartite, chordal, interval, comparability. Client-side.

Perfect Graph Checker Features

  • Perfect test
  • SPGT
  • χ = ω
  • No odd hole
  • Graph classes

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