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Ying D. — On the Moduli Space of Cyclic Trigonal Riemann Surfaces of Genus 4
Ying D. — On the Moduli Space of Cyclic Trigonal Riemann Surfaces of Genus 4



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Название: On the Moduli Space of Cyclic Trigonal Riemann Surfaces of Genus 4

Автор: Ying D.

Аннотация:

A closed Riemann surface which can be realized as a 3-sheeted covering of the Riemann sphere is called trigonal, and such a covering is called a trigonal morphism. Accola showed that the trigonal morphism is unique for Riemann surfaces of genus g > 5. This thesis characterizes the cyclic trigonal Riemann surfaces of genus 4 with non-unique trigonal morphism using the automorphism groups of the surfaces. The thesis shows that Accola's bound is sharp with the existence of a uniparametric family of cyclic trigonal Riemann surfaces of genus 4 having several trigonal morphisms. The structure of the moduli space of trigonal Riemann surfaces of genus 4 is also characterized.
Finally, by using the same technique as in the case of cyclic trigonal Riemann surfaces of genus 4, we are able to deal with p-gonal Riemann surfaces and show that Accola's bound is sharp for p-gonal Riemann surfaces. Furthermore, we study families of p-gonal Riemann surfaces of genus (p — l)*(p-1) with two agonal morphisms, and describe the structure of their moduli space.


Язык: en

Рубрика: Математика/

Тип: Диссертация

Статус предметного указателя: Неизвестно

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Год издания: 2007

Количество страниц: 129

Добавлена в каталог: 23.10.2010

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