168 search results - page 17 / 34 » New upper bounds on the decomposability of planar graphs |
ICALP
2009
Springer
14 years 7 months ago
2009
Springer
We develop new structural results for apex-minor-free graphs and show their power by developing two new approximation algorithms. The first is an additive approximation for colorin...
TAMC
2010
Springer
13 years 5 months ago
2010
Springer
Abstract. Given an undirected graph G and an integer k ≥ 0, the NPhard 2-Layer Planarization problem asks whether G can be transformed into a forest of caterpillar trees by remov...
TIT
2010
13 years 1 months ago
2010
Upper and lower bounds are obtained for the joint entropy of a collection of random variables in terms of an arbitrary collection of subset joint entropies. These inequalities gene...
LATIN
2004
Springer
14 years 3 days ago
2004
Springer
For several graph-theoretic parameters such as vertex cover and dominating set, it is known that if their sizes are bounded by k then the treewidth of the graph is bounded by some ...
FOCS
2003
IEEE
14 years 1 days ago
2003
IEEE
We give a surprisingly short proof that in any planar arrangement of Ò curves where each pair intersects at most a fixed number (×) of times, the -level has subquadratic (Ç´...