On the singular Drinfeld modules of rank 2
The theory of Drinfeld modules of rank 2 is extremely similar to that of elliptic curves. So, for instance, as one can reduce an elliptic curve over a number field modulo primes of that number field, so one can also reduce Drinfeld modules modulo primes of global function fields. In particular, one then obtains Drinfeld modules over ``finite fields''. Thus, one can then discuss ``singular'' and ``supersingular'' Drinfeld modules. In the paper under review, the authors use these concepts to establish analogs of the classical results of Deuring.
scientific article; zbMATH DE number 126384