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CGF
2010
15 years 6 months ago
2010
CORR
2010
Springer
15 years 6 months ago
2010
Springer
136
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COMBINATORICA
2006
15 years 6 months ago
2006
We prove that the out-distance sequence {f+ (k)} of a vertex-transitive digraph of finite or infinite degree satisfies f+ (k + 1) f+ (k)2 for k 1, where f+ (k) denotes the numbe...