34 search results - page 2 / 7 » Adding one edge to planar graphs makes crossing number hard |
ALGORITHMICA
2006
13 years 4 months ago
2006
We consider the problem of coloring a planar graph with the minimum number of colors so that each color class avoids one or more forbidden graphs as subgraphs. We perform a detail...
ISAAC
2005
Springer
13 years 10 months ago
2005
Springer
In an orthogonal drawing of a planar graph G, each vertex is drawn as a point, each edge is drawn as a sequence of alternate horizontal and vertical line segments, and any two edge...
FOCS
2008
IEEE
13 years 11 months ago
2008
IEEE
We prove that approximating the Max Acyclic Subgraph problem within a factor better than 1/2 is Unique-Games hard. Specifically, for every constant ε > 0 the following holds:...
STOC
2006
ACM
14 years 4 months ago
2006
ACM
We study the maximum edge-disjoint paths problem in undirected planar graphs: given a graph G and node pairs s1t1, s2t2, . . ., sktk, the goal is to maximize the number of pairs t...
IWPEC
2009
Springer
13 years 11 months ago
2009
Springer
We study the Equitable Connected Partition problem, which is the problem of partitioning a graph into a given number of partitions, such that each partition induces a connected sub...