The basis of 2× 2 monotone grid classes

نویسندگان

  • Michael Albert
  • Robert Brignall
چکیده

In this note, we prove that all 2× 2 monotone grid classes are finitely based, i.e., defined by a finite collection of minimal forbidden permutations. This follows from a slightly more general result about certain 2× 2 having two monotone cells in the same row.

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تاریخ انتشار 2015