We collect some facts about Drinfeld modular curves for a polynomial ring F q [T ] over a finite field F q . These include formulas for the genera, the numbers of cusps and elliptic points, descriptions of the function fields and fields of definition, and other rationality properties. We then show t
Green's Functions for Drinfeld Modular Curves
โ Scribed by Ulrich Tipp
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 220 KB
- Volume
- 77
- Category
- Article
- ISSN
- 0022-314X
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โฆ Synopsis
Let K=F q (T ) be a rational function field and the place given by the degree in T. Let L รK be a finite extension with ramification index not bigger than 2. We show in this paper how the local Ne ron Tate height pairing at on Drinfeld modular curves over K of divisors whose points are defined over L can be described through analytic functions on 0_0 where 0 is the Drinfeld upper half plane. The Green's function is locally constant around the cusps. For X 0 (N ) the Green's function for cusps is then described by Eisenstein series.
๐ SIMILAR VOLUMES
It is known that Drinfeld modular curves can be used to construct asymptotically optimal towers of curves over finite fields. Using reductions of the Drinfeld modular curves X 0 รฐnร, we try to find individual curves over finite fields with many rational points. The main idea is to divide by an Atkin