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JGT
2006
73views more  JGT 2006»
13 years 10 months ago
Nearly light cycles in embedded graphs and crossing-critical graphs
We find a lower bound for the proportion of face boundaries of an embedded graph that are nearly
Mario Lomelí, Gelasio Salazar
STACS
2005
Springer
14 years 3 months ago
Cycle Cover with Short Cycles
Cycle covering is a well-studied problem in computer science. In this paper, we develop approximation algorithms for variants of cycle covering problems which bound the size and/o...
Nicole Immorlica, Mohammad Mahdian, Vahab S. Mirro...
PDP
2007
IEEE
14 years 4 months ago
Parallel-External Computation of the Cycle Structure of Invertible Cryptographic Functions
We present an algorithm to compute the cycle structure of large directed graphs where each node has exactly one outgoing edge. Such graphs appear as state diagrams of finite stat...
Andreas Beckmann, Jorg Keller
COMBINATORICA
2007
148views more  COMBINATORICA 2007»
13 years 10 months ago
Colored graphs without colorful cycles
A colored graph is a complete graph in which a color has been assigned to each edge, and a colorful cycle is a cycle in which each edge has a different color. We first show that ...
Richard N. Ball, Ales Pultr, Petr Vojtechovsk&yacu...
TCS
2008
13 years 10 months ago
Approximation algorithms for partially covering with edges
The edge dominating set (EDS) and edge cover (EC) problems are classical graph covering problems in which one seeks a minimum cost collection of edges which covers the edges or ve...
Ojas Parekh