Three Moves on Signed Surface Triangulat
β
Shalom Eliahou; Sylvain Gravier; Charles Payan
π
Article
π
2002
π
Elsevier Science
π
English
β 206 KB
We consider finite triangulations of surfaces with signs attached to the faces. Such a signed triangulation is said to have the Heawood property if, at every vertex x, the sum of the signs of the faces incident to x is divisible by 3. For a triangulation G of the sphere, Heawood signings are essenti