540 search results - page 42 / 108 » New bounds on the edge number of a k-map graph |
GD
2004
Springer
14 years 2 months ago
2004
Springer
The no-three-in-line problem, introduced by Dudeney in 1917, asks for the maximum number of points in the n × n grid with no three points collinear. In 1951, Erd¨os proved that t...
DM
2008
13 years 9 months ago
2008
Let G = (V, E) be a graph. A set S V is a restrained dominating set if every vertex not in S is adjacent to a vertex in S and to a vertex in V - S. The restrained domination numb...
SIGMETRICS
2008
ACM
13 years 8 months ago
2008
ACM
During the past decade, a number of different studies have identified several peculiar properties of networks that arise from a diverse universe, ranging from social to computer n...
DAM
2007
13 years 8 months ago
2007
We study the following problem: Given a tree G and a finite set of trees H, find a subset O of the edges of G such that G − O does not contain a subtree isomorphic to a tree f...
ESA
1994
Springer
14 years 28 days ago
1994
Springer
Let S be a set of n points in IRd and let t > 1 be a real number. A t-spanner for S is a graph having the points of S as its vertices such that for any pair p, q of points ther...