activity
20232026
collaborators

6 papers

math.CO2026

Partitions with parity restrictions: a bijective approach

William Keith, Bruce E. Sagan

There has been recent interest in integer partitions whose parts satisfy parity restrictions: for example, those where all the odd parts are distinct, or those where all the even p…

math.NT2026

On a conjecture of Andrews and Bachraoui

Koustav Banerjee, Kathrin Bringmann, William J. Keith

Recently, Andrews and Bachraoui considered a generating function associated with certain two-color partitions, and conjectured that this function has non-negative coef…

math.CO2025

Combinatorial proof of a congruence for partitions into two sizes of part

Eli R. DeWitt, William J. Keith

Previous work showed that, for the number of partitions of into exactly two part sizes, one has . The earlier proof required the techn…

math.CO2025

Reciprocals of false theta functions

William J. Keith

We investigate reciprocals of false theta functions, producing results such as congruences, simple asymptotic bounds, and combinatorial identities. Of particular interest is a conn…

math.CO2024

Parity of the coefficients of certain eta-quotients, III: two special classes

William J. Keith, Fabrizio Zanello

We continue a series of papers studying the parity of families of eta-quotients, which provide implications for the parity of the partition function as well as an overarching conje…

math.CO2023

Parity of the coefficients of certain eta-quotients, II: The case of even-regular partitions

William J. Keith, Fabrizio Zanello

We continue our study of the density of the odd values of eta-quotients, here focusing on the -regular partition functions for even. Based on extensive computational e…