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EJC
2006
15 years 5 months ago
2006
The digraphs P(n, k) have vertices corresponding to length k permutations of an n set and arcs corresponding to (k + 1) permutations. Answering a question of Starling, Klerlein, K...
SODA
1994
ACM
15 years 6 months ago
1994
ACM
86
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CPC
2008
15 years 5 months ago
2008
130
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EJC
2006
15 years 5 months ago
2006
An n-lift of a graph K, is a graph with vertex set V (K)