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» On perfectness of sums of graphs
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93
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EJC
2007
15 years 1 months ago
Perfect packings with complete graphs minus an edge
Let K− r denote the graph obtained from Kr by deleting one edge. We show that for every integer r ≥ 4 there exists an integer n0 = n0(r) such that every graph G whose order n â...
Oliver Cooley, Daniela Kühn, Deryk Osthus
JGT
2006
97views more  JGT 2006»
15 years 1 months ago
Matchings in hypergraphs of large minimum degree
It is well known that every bipartite graph with vertex classes of size n whose minimum degree is at least n/2 contains a perfect matching. We prove an analogue of this result for...
Daniela Kühn, Deryk Osthus
ISAAC
2005
Springer
127views Algorithms» more  ISAAC 2005»
15 years 7 months ago
On Complexity and Approximability of the Labeled Maximum/Perfect Matching Problems
In this paper, we deal with both the complexity and the approximability of the labeled perfect matching problem in bipartite graphs. Given a simple graph G = (V, E) with n vertices...
Jérôme Monnot
107
Voted
WEA
2005
Springer
138views Algorithms» more  WEA 2005»
15 years 7 months ago
A Practical Minimal Perfect Hashing Method
We propose a novel algorithm based on random graphs to construct minimal perfect hash functions h. For a set of n keys, our algorithm outputs h in expected time O(n). The evaluatio...
Fabiano C. Botelho, Yoshiharu Kohayakawa, Nivio Zi...
83
Voted
ESA
2004
Springer
92views Algorithms» more  ESA 2004»
15 years 7 months ago
Algorithms for Generating Minimal Blockers of Perfect Matchings in Bipartite Graphs and Related Problems
Endre Boros, Khaled M. Elbassioni, Vladimir Gurvic...