Counting permutations by peaks, descents, and cycle type

WAKE FOREST UNIVERSITY DEPARTMENT OF MATHEMATICS & STATISTICS Presents Yan Zhang Davidson College Tuesday, October 15th, 2019 11am Carswell Hall, Room 101 Abstract: We present a general formula describing the joint distribution of two permutation statistics—the peak number and the descent number—over any set of permutations whose quasisymmetric generating function…

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