Pontos de Galois de curvas planas projetivas em característica positiva

Abstract

In this dissertation we study Galois points in an algebraic non singular plane curve C P2 of degree d 4 in positive characteristic p > 2. The results of H. Yoshihara on the number of inner (respectively outer) Galois points are generalized in this case, under the assumption that d 6 1 modulo p (respectively d 6 0 modulo p). We determine all the number of inner and outer Galois points, in the case that p = d and for quartic curves in three characteristic.