320 search results - page 48 / 64 » Parity Problems in Planar Graphs |
JGT
2008
13 years 7 months ago
2008
A homomorphism from an oriented graph G to an oriented graph H is a mapping from the set of vertices of G to the set of vertices of H such that ----(u)(v) is an arc in H whenever...
ALGORITHMICA
2004
13 years 7 months ago
2004
Abstract. We present an O(n log n)-time algorithm to solve the threedimensional layers-of-maxima problem, an improvement over the prior O(n log n log log n)-time solution. A previo...
FOCS
2003
IEEE
14 years 1 months 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´...
TAMC
2009
Springer
14 years 2 months ago
2009
Springer
In this paper we define the notion of an f(k)-uniform parameterized exponential time scheme. We show that a problem can be solved in parameterized O(2o(f(k)) p(n)) time if and on...
SWAT
1990
Springer
13 years 11 months ago
1990
Springer
We give improved solutions for the problem of generating the k smallest spanning trees in a graph and in the plane. Our algorithm for general graphs takes time O(m log (m, n) + k2...