Belyi map for the sporadic group J2

Abstract

We present a genus 0 Belyi map for the sporadic Janko group J2 of degree 280. As a consequence we obtain a polynomial having Aut(J2) as a Galois group over K(t) where K is a number field of degree 10.

3 pages, the data for the Belyi map is contained in the ancillary files

References in corpus (1)

• The sporadic group J2, Hauptmodul and Belyi map