A Rigid Local System with Monodromy Group 2.J_2
Number Theory
2018-09-18 v1
Abstract
We exhibit a rigid local system of rank six on the affine line in characteristic whose arithmetic and geometric monodromy groups are the finite group ( the Hall-Janko sporadic group) in one of its two (Galois-conjugate) irreducible representation of degree six.
Cite
@article{arxiv.1809.05755,
title = {A Rigid Local System with Monodromy Group 2.J_2},
author = {Nicholas M. Katz and Antonio Rojas-León},
journal= {arXiv preprint arXiv:1809.05755},
year = {2018}
}