Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4647755 | Discrete Mathematics | 2012 | 12 Pages |
Abstract
A graph is pseudo-outerplanar if each block has an embedding on the plane in such a way that the vertices lie on a fixed circle and the edges lie inside the disk of this circle with each of them crossing at most one another. In this paper, we prove that each pseudo-outerplanar graph admits edge decompositions into a linear forest and an outerplanar graph, or a star forest and an outerplanar graph, or two forests and a matching, or max{Δ(G),4}max{Δ(G),4} matchings, or max{⌈Δ(G)/2⌉,3}max{⌈Δ(G)/2⌉,3} linear forests. These results generalize known results on outerplanar graphs and K2,3K2,3-minor-free graphs, since the class of pseudo-outerplanar graphs is larger than the class of K2,3K2,3-minor-free graphs.
Related Topics
Physical Sciences and Engineering
Mathematics
Discrete Mathematics and Combinatorics
Authors
Xin Zhang, Guizhen Liu, Jian-Liang Wu,