Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-26T18:45:53.529Z Has data issue: false hasContentIssue false

On Schoeneberg's theorem

Published online by Cambridge University Press:  18 May 2009

C. Maclachlan
Affiliation:
University of Aberdeen
Rights & Permissions [Opens in a new window]

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Let Sbe a compact Riemann surface of genus g ≥ 2 and σ an automorphism (conformal self-homeomorphism) of S of order n. Let S* = S/ « σ« have genus g*. In [5], Schoeneberg gave a sufficient condition that a fixed point PS of σ should be a Weierstrass point of S, i.e., that Sshould support a function that has a pole of order less than or equal to g at P and is elsewhere regular.

Type
Research Article
Copyright
Copyright © Glasgow Mathematical Journal Trust 1973

References

REFERENCES

1.Harvey, W. J., Cyclic groups of automorphisms of a compact Riemann surface, Quart. J. Math. Oxford Ser. (2) 17 (1966), 8697.Google Scholar
2.Larcher, H., Weierstrass points at the cusps of Γ0(16p) and the hyperellipticity of Γ0(n), Canad. J. Math. 22 (1971), 960968.CrossRefGoogle Scholar
3.Lewittes, J., Automorphisms of compact Riemann surfaces, Amer. J. Math. 84 (1963), 734752.Google Scholar
4.Maclachlan, C., Weierstrass points on compact Riemann surfaces, J. London Math. Soc. (2) 3 (1971), 722724.Google Scholar
5.Schoeneberg, B., Über die Weierstrasspunkte in den Körpern den elliptischen Modulfunktionen, Abh. Math. Sem. Univ. Hamburg 17 (1951), 104111.CrossRefGoogle Scholar