Torsion of Drinfeld modules and equicharacteristic unimodular Galois covers

Gunther Cornelissen, Marina Tripolitaki

We prove that the groups PSL(r,q^d) can be realized F_q(T)-regularly as Galois groups over the purely transcendental field F_q(T)(t_1,...,t_{r-1}) if r is even and r/2 is coprime t…