activity
19972025
most citedUnimodality and the reflection principle

13 citations · 28 across the 9 of their papers we have counts for

collaborators

9 papers

math.CO2025

Hyperbinary partitions and q-deformed rationals

Thomas McConville, James Propp, Bruce E. Sagan

A hyperbinary partition of the nonnegative integer n is a partition where every part is a power of 2 and every part appears at most twice. We give three applications of the length…

math.CO2025★ 1 cited

K-promotion on m-packed labelings of posets

Jamie Kimble, Bruce E. Sagan, Avery St. Dizier

Schutzenberger's promotion operator, pro, is a fundamental map in dynamical algebraic combinatorics. At first, its action was mainly considered on standard Young tableaux. But pro…

math.CO2025

Ordered set partition posets

Bruce E Sagan, Sheila Sundaram

A set partition is said to be ordered if the blocks of the partition are listed in a specific order. The ordered set partitions of , with a unique minimal element a…

math.NT2025

Generalized Euler numbers and ordered set partitions

Bruce E. Sagan

The Euler numbers have been widely studied. A signed version of the Euler numbers of even subscript are given by the coefficients of the exponential generating function 1/(1+x^2/2!…

math.CO2024★ 2 cited

Stirling numbers for complex reflection groups

Bruce E Sagan, Joshua Swanson

In an earlier paper, we defined and studied q-analogues of the Stirling numbers of both types for the Coxeter group of type B. In the present work, we show how this approach can be…

math.CO2024

Chromatic symmetric functions and change of basis

Bruce E. Sagan, Foster Tom

We prove necessary conditions for certain elementary symmetric functions, , to appear with nonzero coefficient in Stanley's chromatic symmetric function as well as in the gene…