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Quadratic Function Fields with Exponent Two Ideal Class Group

Number Theory 2007-05-23 v1

Abstract

It has been shown by Madden that there are only finitely many quadratic extensions of k(x), k a finite field, in which the ideal class group has exponent two and the infinity place of k(x) ramifies. We give a characterization of such fields that allow us to find a full list of all such field extensions for future reference. In doing so we correct some errors in earlier published literature.

Keywords

Cite

@article{arxiv.math/0504581,
  title  = {Quadratic Function Fields with Exponent Two Ideal Class Group},
  author = {Victor Bautista-Ancona and Javier Diaz-Vargas},
  journal= {arXiv preprint arXiv:math/0504581},
  year   = {2007}
}

Comments

To appear in the Journal of Number Theory