1 citations · 1 across the 3 of their papers we have counts for
Showing math.COShow all
3 papers · 1 filter
math.CO2014★ 1 cited
A sign-reversing involution for an extension of Torelli's Pfaffian identity
Richard Ehrenborg, N. Bradley Fox
We evaluate the hyperpfaffian of a skew-symmetric -ary polynomial of degree . The result is a product of the Vandermonde product and a certain expression in…
math.CO2010
Exponential Dowling structures
Richard Ehrenborg, Margaret Readdy
The notion of exponential Dowling structures is introduced, generalizing Stanley's original theory of exponential structures. Enumerative theory is developed to determine the Möbiu…
math.CO2010
The Möbius function of partitions with restricted block size
Richard Ehrenborg, Margaret Readdy
We study filters in the partition lattice formed by restricting to partitions by type. The Möbius function is determined in terms of the easier-to-compute descent set statistics on…