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STEPHAN KREUTZER COMPLEXITY OF MODEL-CHECKING PROBLEMS 23/81<br />

INTRODUCTION COMPLEXITY UPPER BOUNDS COMPOSITION LOCALITY LOCALISATION GRIDS GRID-LIKE MINORS LABELLED WEBS<br />

Examples<br />

Example 1: Trees/Forests have tree-width 1<br />

Proposition: Acyclic graphs are precisely the graphs of tree-width 1.

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