21 search results - page 1 / 5 » On colorings of squares of outerplanar graphs |
SODA
2004
ACM
13 years 6 months ago
2004
ACM
We study vertex colorings of the square G2 of an outerplanar graph G. We find the optimal bound of the inductiveness, chromatic number and the clique number of G2 as a function of...
ARSCOM
2008
13 years 4 months ago
2008
DM
2008
13 years 4 months ago
2008
A sequence of the form s1s2 . . . sms1s2 . . . sm is called a repetition. A vertex-coloring of a graph is called nonrepetitive if none of its paths is repetitively colored. We ans...
DAM
2010
13 years 4 months ago
2010
In this paper, we study homomorphisms of 2-edge-colored graphs, that is graphs with edges colored with two colors. We consider various graph classes (outerplanar graphs, partial 2...
IPL
2006
13 years 4 months ago
2006
A homomorphism from an oriented graph G to an oriented graph H is an arc-preserving mapping from V (G) to V (H), that is (x)(y) is an arc in H whenever xy is an arc in G. The orie...