English

On Orders in Number Fields: Picard Groups, Ring Class Fields and Applications

Number Theory 2016-12-06 v3

Abstract

In this article, we focus on orders in arbitrary number fields, consider their Picard groups and finally obtain ring class fields corresponding to them. The Galois group of the ring class field is isomorphic to the Picard group. As an application, we give criteria of the solvability of the diophantine equation p=x2+ny2p=x^2+ny^2 over a class of imaginary quadratic fields where pp is a prime element.

Keywords

Cite

@article{arxiv.1405.5776,
  title  = {On Orders in Number Fields: Picard Groups, Ring Class Fields and Applications},
  author = {Chang Lv and Yingpu Deng},
  journal= {arXiv preprint arXiv:1405.5776},
  year   = {2016}
}

Comments

13 pages, this version (date: Aug 8, 2014; git commit:20140627a/db806a6) has been accepted for publication in SCIENCE CHINA Mathematics on Jan 4, 2015. arXiv admin note: substantial text overlap with arXiv:1405.7109

R2 v1 2026-06-22T04:21:03.485Z