Coloring Eulerian triangulations of the projective plane
نویسنده
چکیده
A simple characterization of the 3, 4, or 5-colorable Eulerian triangulations of the projective plane is given.
منابع مشابه
Polychromatic 4-coloring of cubic even embeddings on the projective plane
A polychromatic k-coloring of a map G on a surface is a k-coloring such that each face of G has all k colors on its boundary vertices. An even embedding G on a surface is a map of a simple graph on the surface such that each face of G is bounded by a cycle of even length. In this paper, we shall prove that a cubic even embedding G on the projective plane has a polychromatic proper 4-coloring if...
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ورودعنوان ژورنال:
- Discrete Mathematics
دوره 244 شماره
صفحات -
تاریخ انتشار 2002