COCOON
2003
Springer
13 years 9 months ago
2003
Springer
We study the complexity of the reachability problem for a new subclass of Petri nets called simple-circuit Petri nets, which properly contains several well known subclasses such as...
COCOON
2003
Springer
13 years 9 months ago
2003
Springer
We investigate hamiltonian properties of Pm × Cn, m ≥ 2 and even n ≥ 4, which is bipartite, in the presence of faulty vertices and/or edges. We show that Pm×Cn with n even is...
COCOON
2003
Springer
13 years 9 months ago
2003
Springer
In this paper, we show some properties of a pseudotriangle and present three combinatorial bounds: the ratio of the size of minimum pseudotriangulation of a point set S and the siz...
COCOON
2003
Springer
13 years 9 months ago
2003
Springer
As more and more genomes are sequenced, evolutionary biologists are becoming increasingly interested in evolution at the level of whole genomes, in scenarios in which the genome ev...
COCOON
2003
Springer
13 years 9 months ago
2003
Springer
In this paper, we approach the quality of a greedy algorithm for the maximum weighted clique problem from the viewpoint of matroid theory. More precisely, we consider the clique c...
COCOON
2003
Springer
13 years 9 months ago
2003
Springer
COCOON
2003
Springer
13 years 9 months ago
2003
Springer
Abstract. We show that finding roots of Boolean matrices is an NPhard problem. This answers a twenty year old question from semigroup theory. Interpreting Boolean matrices as dire...
COCOON
2003
Springer
13 years 9 months ago
2003
Springer
The spectral approach for graph visualization computes the layout of a graph using certain eigenvectors of related matrices. Some important advantages of this approach are an abili...
COCOON
2003
Springer
13 years 9 months ago
2003
Springer
Abstract. While the original stable marriage problem requires all participants to rank all members of the opposite sex in a strict order, two natural variations are to allow for in...
COCOON
2003
Springer
13 years 9 months ago
2003
Springer
In the popular computer game of Tetris, the player is given a sequence of tetromino pieces and must pack them into a rectangular gameboard initially occupied by a given configurat...