Authors

Yi Zhu

Type

Text

Type

Dissertation

Advisor

Starr, Jason , Laza, Radu | Grushevsky, Samuel | de Jong, Johan.

Date

2012-05-01

Keywords

elementary obstructions, homogeneous spaces, rational curves, rationally simply connected, rational points | Mathematics

Department

Department of Mathematics

Language

en_US

Source

This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree.

Identifier

http://hdl.handle.net/11401/71477

Publisher

The Graduate School, Stony Brook University: Stony Brook, NY.

Format

application/pdf

Abstract

A basic question in arithmetic geometry is whether a variety defined over a non-closed field admits a rational point. When the base field is of geometric nature, i.e. | function fields of varieties, one hopes to solve the problem via purely algebraically geometric methods. In this thesis, we study the geometry of the moduli space of sections of a projective homogeneous space fibration over an algebraic curve. It leads to answers for the existence of rational points on projective homogeneous spaces defined either over a global function field or over a function field of a complex algebraic surface. | 88 pages

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