Mathematics – Combinatorics
Scientific paper
2004-08-26
Mathematics
Combinatorics
6 pages, 4 figures
Scientific paper
Stan Wagon asked the following in 2000. Is every zonohedron face 3-colorable when viewed as a planar map? An equivalent question, under a different guise, is the following: is the arrangement graph of great circles on the sphere always vertex 3-colorable? (The arrangement graph has a vertex for each intersection point, and an edge for each arc directly connecting two intersection points.) Assume that no three circles meet at a point, so that this arrangement graph is 4-regular. In this note we have shown that all arrangement graphs defined as above are 3-colorable.
No associations
LandOfFree
Three Colorability of an Arrangement Graph of Great Circles does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Three Colorability of an Arrangement Graph of Great Circles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Three Colorability of an Arrangement Graph of Great Circles will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-476684