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arxiv: 1807.00585 · v1 · pith:NXTFHYRYnew · submitted 2018-07-02 · 🧮 math.CO

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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