540 search results - page 18 / 108 » New bounds on the edge number of a k-map graph |
105
click to vote
IWOCA
2009
Springer
15 years 6 months ago
2009
Springer
: We present an improved upper bound of O(d1+ 1 m−1 ) for the (2, F)-subgraph chromatic number χ2,F (G) of any graph G of maximum degree d. Here, m denotes the minimum number of...
100
click to vote
CORR
2008
Springer
14 years 12 months ago
2008
Springer
In MaxSat, we ask for an assignment which satisfies the maximum number of clauses for a boolean formula in CNF. We present an algorithm yielding a run time upper bound of O (2 K 6....
108
click to vote
COCOON
2008
Springer
15 years 1 months ago
2008
Springer
In this paper, we consider a new visual cryptography scheme that allows for sharing of multiple secret images on graphs: we are given an arbitrary graph (V, E) where every node an...
115
click to vote
CORR
2010
Springer
14 years 12 months ago
2010
Springer
The oriented chromatic number of an oriented graph G is the minimum order of an oriented graph H such that G admits a homomorphism to H. The oriented chromatic number of an undire...
112
click to vote
MFCS
2004
Springer
15 years 5 months ago
2004
Springer
Abstract. Bidimensionality provides a tool for developing subexponential fixed-parameter algorithms for combinatorial optimization problems on graph families that exclude a minor....