Boris Adamczewski & Jason Bell
Function fields in positive charcteristic: expansions and Cobham's theorem
In the vein of Christol, Kamae, Mendès France and Rauzy, we consider the analogue of a problem of Mahler for rational functions in positive characteristic. To solve this question,
we prove an extension of Cobham's theorem for quasiautomatic functions and use
the recent generalization of Christol's theorem obtained by Kedlaya.
