On 4-critical t-perfect graphs

Preprint English OPEN
Benchetrit, Yohann; (2016)
  • Subject: Mathematics - Combinatorics | Computer Science - Discrete Mathematics

It is an open question whether the chromatic number of $t$-perfect graphs is bounded by a constant. The largest known value for this parameter is 4, and the only example of a 4-critical $t$-perfect graph, due to Laurent and Seymour, is the complement of the line graph o... View more
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