643 search results - page 38 / 129 » Supereulerian planar graphs |
STOC
2010
ACM
14 years 5 months ago
2010
ACM
We study the ratio between the minimum size of an odd cycle vertex transversal and the maximum size of a collection of vertex-disjoint odd cycles in a planar graph. We show that th...
AAIM
2010
Springer
13 years 12 months ago
2010
Springer
Abstract. We present new kernelization results for the s-cycle transversal problem for s > 3. In particular, we show a 6k2 kernel for 4-cycle transversal and a O(ks−1 ) kernel...
CORR
2012
Springer
12 years 3 months ago
2012
Springer
Let G be a directed graph with n vertices and non-negative weights in its directed edges, embedded on a surface of genus g, and let f be an arbitrary face of G. We describe an alg...
WADS
2007
Springer
14 years 1 months ago
2007
Springer
We present a polynomial-time approximation scheme (PTAS) for the Steiner tree problem with polygonal obstacles in the plane with running time O(n log2 n), where n denotes the numb...
DM
2010
13 years 7 months ago
2010
A balanced graph is a bipartite graph with no induced circuit of length 2 (mod 4). These graphs arise in linear programming. We focus on graph-algebraic properties of balanced gra...