9 citations · 25 across the 29 of their papers we have counts for
Showing 2019Show all
3 papers · 1 filter
math.CO2019
A new decomposition of ascent sequences and Euler--Stirling statistics
Shishuo Fu, Emma Yu Jin, Zhicong Lin +2
As shown by Bousquet-Mélou--Claesson--Dukes--Kitaev (2010), ascent sequences can be used to encode -free posets. It is known that ascent sequences are enumerated by the…
math.CO2019
On self-conjugate -core partitions
Sherry H. F. Yan, Yao Yu, Hao Zhou
Simultaneous core partitions have been widely studied since Anderson's work on the enumeration of -core partitions. Amdeberhan and Leven showed that the number of $(s,s+1, \…
math.CO2019
A new encoding of permutations by Laguerre histories
Sherry H. F. Yan, Hao Zhou, Zhicong Lin
We construct a bijection from permutations to some weighted Motzkin paths known as Laguerre histories. As one application of our bijection, a neat --positivity expansion of t…