Regular expressions for tree-width 2 graphs
Résumé
We propose a syntax of regular expressions, which describes languages of tree-width 2 graphs. We show that these languages correspond exactly to those languages of tree-width 2 graphs, definable in the counting monadic second-order logic (CMSO).
Domaines
Informatique [cs]Origine | Fichiers éditeurs autorisés sur une archive ouverte |
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