activity
20192026
most citedOn the arithmetic of Padé approximants to the exponential function

1 citations · 2 across the 10 of their papers we have counts for

collaborators

11 papers

math.NT2026

Hasse-Witt invariants for trace forms of Jacobi polynomials

John Cullinan, Farshid Hajir, Elisabeth Young

In \cite{feit}, Feit used the Generalized Laguerre Polynomials (GLP) to prove that the groups and occur as Galois groups over $\Q$. Hajir, i…

math.NT2026

Kodaira-Neron statistics for rational elliptic curves with -invariant 0 and 1728

John Cullinan, Sebastian Sargenti

Elliptic curves over $\Q$ with -invariant 0 or 1728 have additive reduction at all primes of bad reduction. In addition, all elliptic curves with -invariant 0 have bad reduct…

math-ph2026

The Gibbs phenomenon for the Krawtchouk polynomials

John Cullinan, Elisabeth Young

We study the Fourier approximation of the sign function by the Krawtchouk polynomials. We give numerical evidence that the Gibbs phenomenon of the approximation dif…

math.NT2023

The probability of non-isomorphic group structures of isogenous elliptic curves in finite field extensions, I

John Cullinan, Nathan Kaplan

Let be a prime number and let and be -isogenous elliptic curves defined over a finite field of characteristic . Suppose the groups and…

math.NT2022

On the Irreducibility of the Krawtchouck Polynomials

John Cullinan

The Krawtchouck polynomials arise naturally in both coding theory and probability theory and have been studied extensively from these points of view. However, very little is known…

math-ph2022

Towards a Universal Gibbs Constant

John Cullinan, Santanu Antu

In this paper we build on the work of \cite{kaber} where it was shown that the one-parameter family of Gegenbauer Polynomials (GP) exhibit a Gibbs Phenomenon at a jump discontinuit…

math.NT2021

Realizations of Unisingular Representations by Hyperelliptic Jacobians

John Cullinan

A representation of a finite group on a finite dimensional vector space is called \textbf{unisingular} if every has 1 as an eigenvalue in its action on . In thi…

math.NT2020

Unisingular representations in arithmetic and Lie theory

John Cullinan, Alexandre Zalesski

Let G be a subgroup of GL(V), where V is a finite dimensional vector space over a finite field of characteristic p >0. If det(g-1) = 0 for all g \in G then we call G a fixed-point…

math.NT2020★ 1 cited

On the arithmetic of Padé approximants to the exponential function

John Cullinan, Nick Scheel

The -Padé approximation to a function is the (unique, up to scaling) rational approximation , where has degree and has degre…

math.NT2020

On a probabilistic local-global principle for torsion on elliptic curves

John Cullinan, Meagan Kenney, John Voight

Let be a positive integer and let be an elliptic curve over with the property that $m\mid#E(\mathbb{F}_p)$ for a density set of primes . Building upon w…

math.NT2019★ 1 cited

Divisibility of torsion subgroups of abelian surfaces over number fields

John Cullinan, Jeffrey Yelton

Let be a 2-dimensional abelian variety defined over a number field . Fix a prime number and suppose for a set of primes $\m…