Combinatorial Proof of the Log-Concavity of the Numbers of Permutations with k Runs

Miklós Bóna, Richard Ehrenborg. Combinatorial Proof of the Log-Concavity of the Numbers of Permutations with k Runs. Journal of Combinatorial Theory, Series A, 90(2):293-303, 2000. [doi]

Abstract

Abstract is missing.