On realization of isometries for higher rank quadratic lattices over number fields
On realization of isometries for higher rank quadratic lattices over number fields
复制标题
数域上高阶二次格的等距实现
DOI:
10.1090/tran/8670
复制
发表时间:
2022
影响因子:
1.3
通讯作者:
Li, Han
中科院分区:
文献类型:
--
作者:
Chan, Wai Kiu;Li, Han
Letbe a number field, andbe an integer. In this paper we give an effective procedure which (1) determines whether two given quadratic lattices onare isometric or not, and (2) produces an invertible linear transformation realizing the isometry provided the two given lattices are isometric. A key ingredient in our approach is a search bound for the equivalence of two given quadratic forms over number fields which we prove using methods from algebraic groups, homogeneous dynamics and spectral theory of automorphic forms. References