A non-ordinary (prime) note

Abstract

Given a newform with the Fourier expansion ${\sum }_{n=1}^{\infty }b(n)q^n\in \mathbb{Z}[[q]]$, a prime $p$ is said to be non-ordinary if $p\mid b(p)$. We exemplify several newforms of weight 4 for which the latter divisibility implies a stronger divisibility - a property that may be thought unlikely to happen too often.

4 pages