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Galois Weierstrass points and Hurwitz characters. (English) Zbl 0624.14018
Fix a Weierstrass point P of a Riemann surface and let $$f: X\to {\mathbb{P}}^ 1$$ be the associated covering, totally ramified at P. In this nice paper it is given a complete classification of the possible semigroups arising from Weierstrass points for which f is a Galois covering (hence cyclic). The classification (in terms of characters of the Galois group) is too complicated to be stated in one page.
Reviewer: E.Ballico

##### MSC:
 14H30 Coverings of curves, fundamental group 14H55 Riemann surfaces; Weierstrass points; gap sequences
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