摘要翻译:
我们构造了E_8格的显式例子,其自然Galois作用等于该格的自同构的全群,即E_8的Weyl群。特别地,我们给出了Q(t)上Mordell-Weil格与E_8同构且具有极大Galois作用的显式椭圆曲线。我们的主要研究对象是数域上的1次del Pezzo曲面。几何Picard群通过交对的负而被视为格,它包含一个与E_8同构的子格。我们构造了Galois在几何Picard群上的作用最大的这类曲面的例子。
---
英文标题:
《Arithmetic E_8 lattices with maximal Galois action》
---
作者:
Anthony V\'arilly-Alvarado, David Zywina
---
最新提交年份:
2008
---
分类信息:
一级分类:Mathematics 数学
二级分类:Number Theory 数论
分类描述:Prime numbers, diophantine equations, analytic number theory, algebraic number theory, arithmetic geometry, Galois theory
素数,丢番图方程,解析数论,代数数论,算术几何,伽罗瓦理论
--
一级分类:Mathematics 数学
二级分类:Algebraic Geometry 代数几何
分类描述:Algebraic varieties, stacks, sheaves, schemes, moduli spaces, complex geometry, quantum cohomology
代数簇,叠,束,格式,模空间,复几何,量子上同调
--
---
英文摘要:
We construct explicit examples of E_8 lattices occurring in arithmetic for which the natural Galois action is equal to the full group of automorphisms of the lattice, i.e., the Weyl group of E_8. In particular, we give explicit elliptic curves over Q(t) whose Mordell-Weil lattices are isomorphic to E_8 and have maximal Galois action. Our main objects of study are del Pezzo surfaces of degree 1 over number fields. The geometric Picard group, considered as a lattice via the negative of the intersection pairing, contains a sublattice isomorphic to E_8. We construct examples of such surfaces for which the action of Galois on the geometric Picard group is maximal.
---
PDF链接:
https://arxiv.org/pdf/0803.3063