Kathrin Maurischat

collaborators

2 papers

math.NT2026

Reciprocals of Subsum Polynomials

Cristina Ballantine, George Beck, Brooke Feigon +1

We introduce the subsum polynomial of a partition $λ = (λ_{1}, λ_{2}, \dots, λ_{k})$ defined by $sp (λ, x) = \prod_{i = 1}^{k} (1 + x^{λ_{i}})$ . We study the sum of reciprocals of $\mathrm{s…

math.NT2023

Ramanujan Bigraphs

Shai Evra, Brooke Feigon, Kathrin Maurischat +1

In their seminal paper, Lubotzky, Phillips and Sarnak (LPS) defined the notion of regular Ramanujan graphs and gave an explicit construction of infinite families of $(p + 1)$ -regular…