English

Generalized R\'edei rational functions and rational approximations over conics

Number Theory 2012-09-05 v1

Abstract

In this paper we study a general class of conics starting from a quotient field. We give a group structure over these conics generalizing the construction of a group over the Pell hyperbola. Furthermore, we generalize the definition of R\'edei rational functions in order to use them for evaluating powers of points over these conics. Finally, we study rational approximations of irrational numbers over conics, obtaining a new result for the approximation of quadratic irrationalities.

Keywords

Cite

@article{arxiv.1209.0573,
  title  = {Generalized R\'edei rational functions and rational approximations over conics},
  author = {Stefano Barbero and Umberto Cerruti and Nadir Murru},
  journal= {arXiv preprint arXiv:1209.0573},
  year   = {2012}
}

Comments

11 pages

R2 v1 2026-06-21T21:59:23.617Z