63 search results - page 7 / 13 » Distance graphs with maximum chromatic number |
161
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AAIM
2007
Springer
15 years 11 months ago
2007
Springer
An acyclic edge colouring of a graph is a proper edge colouring having no 2-coloured cycle, that is, a colouring in which the union of any two colour classes forms a linear forest...
200
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KDD
2012
ACM
13 years 8 months ago
2012
ACM
We study a novel clustering problem in which the pairwise relations between objects are categorical. This problem can be viewed as clustering the vertices of a graph whose edges a...
175
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CIAC
2010
Springer
15 years 9 months ago
2010
Springer
We investigate the relationship between two kinds of vertex colorings of graphs: uniquemaximum colorings and conflict-free colorings. In a unique-maximum coloring, the colors are ...
154
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COMBINATORICS
2000
15 years 5 months ago
2000
A mixed hypergraph is a triple H = (V, C, D) where V is the vertex set and C and D are families of subsets of V , the C-edges and D-edges, respectively. A k-colouring of H is a ma...
154
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SWAT
1994
Springer
15 years 9 months ago
1994
Springer
Trapezoid graphs are a class of cocomparability graphs containing interval graphs and permutation graphs as subclasses. They were introduced by Dagan, Golumbic and Pinter DGP]. Th...