Lattice Path Matroids are 3-Colorable
classification
🧮 math.CO
keywords
latticepathcolinecolorableeverymatroidmatroidsattler
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We show that every lattice path matroid of rank at least two has a quite simple coline, also known as a positive coline. Therefore every orientation of a lattice path matroid is 3-colorable with respect to the chromatic number of oriented matroids introduced by J. Ne\v{s}et\v{r}il, R. Nickel, and W. Hochst\"attler.
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