2 papers
math.CO2015
Sieved Enumeration of Interval Orders and Other Fishburn Structures
Stuart A. Hannah
Following a result of Eriksen and Sjöstrand (2014) we detail a technique to construct structures following the Fishburn distribution from appropriate Mahonian structures. This tech…
math.CO2014
Decomposing labeled interval orders as pairs of permutations
Anders Claesson, Stuart A. Hannah
We introduce ballot matrices, a signed combinatorial structure whose definition naturally follows from the generating function for labeled interval orders. A sign reversing involut…