We are not able to resolve this OAI Identifier to the repository landing page. If you are the repository manager for this record, please head to the Dashboard and adjust the settings.
For a graph F, a graph G is F-free if it does not contain an induced subgraph isomorphic to F.
For two graphs G and H, an H-coloring of G is a mapping f : V (G) --> V (H) such that for every
edge uv E(G) it holds that f(u)f(v) E(H). We are interested in the complexity of the problem
H-Coloring, which asks for the existence of an H-coloring of an input graph G. In particular, we
consider H-Coloring of F-free graphs, where F is a fixed graph and H is an odd cycle of length
at least 5. This problem is closely related to the well known open problem of determining the
complexity of 3-Coloring of Pt-free graphs.
We show that for every odd k ≥ 5 the Ck-Coloring problem, even in the precoloring-extension
variant, can be solved in polynomial time in P9-free graphs. On the other hand, we prove that the
extension version of Ck-Coloring is NP-complete for F-free graphs whenever some component of
F is not a subgraph of a subdivided claw.Supported by NSF grant DMS-1763817. This material is based upon work supported in part by the U. S. Army Research Laboratory and the U. S. Army Research Office under grant number W911NF-16-1-0404. This research is supported by the National Natural Science Foundation of China (11801284). This material is based upon work supported by the National Science Foundation under Award No. DMS1802201
Is data on this page outdated, violates copyrights or anything else? Report the problem now and we will take corresponding actions after reviewing your request.