266 search results - page 46 / 54 » Chromatic Ramsey numbers |
ISCAS
1999
IEEE
15 years 4 months ago
1999
IEEE
In this letter, a new class of nonlinear filters called vector median-rational hybrid filters (VMRHF's) for multispectral image processing is introduced and applied to the col...
DM
2010
14 years 12 months ago
2010
For graphs of bounded maximum degree, we consider acyclic t-improper colourings, that is, colourings in which each bipartite subgraph consisting of the edges between two colour cl...
DAM
2007
14 years 11 months ago
2007
In this paper, we prove that the harmonious coloring problem is NP-complete for connected interval and permutation graphs. Given a simple graph G, a harmonious coloring of G is a ...
EJC
2007
14 years 11 months ago
2007
Let K− r denote the graph obtained from Kr by deleting one edge. We show that for every integer r ≥ 4 there exists an integer n0 = n0(r) such that every graph G whose order n â...
114
click to vote
STOC
2005
ACM
16 years 2 days ago
2005
ACM
We introduce a new graph parameter, called the Grothendieck constant of a graph G = (V, E), which is defined as the least constant K such that for every A : E R, sup f:V S|V |-1 ...