English

Solving effectively some families of Thue Diophantine equations

Number Theory 2013-12-30 v1

Abstract

Let α\alpha be an algebraic number of degree d3d\ge 3 and let KK be the algebraic number field \Q(α)\Q(\alpha). When ε\varepsilon is a unit of KK such that \Q(αε)=K\Q(\alpha\varepsilon)=K, we consider the irreducible polynomial fε(X)Z[X]f_\varepsilon(X) \in \Z[X] such that fε(αε)=0f_\varepsilon(\alpha\varepsilon)=0. Let Fε(X,Y)F_\varepsilon(X,Y) be the irrreducible binary form of degree dd associated to fε(X)f_{\varepsilon}(X) under the condition Fε(X,1)=fε(X)F_{\varepsilon}(X,1)=f_{\varepsilon}(X). For each positive integer mm, we want to exhibit an effective upper bound for the solutions (x,y,ε)(x,y,\varepsilon) of the diophantine inequation Fε(x,y)m|F_\varepsilon(x,y)|\le m. We achieve this goal by restricting ourselves to a subset of units ε\varepsilon which we prove to be sufficiently large as soon as the degree of KK is 4\geq 4.

Keywords

Cite

@article{arxiv.1312.7205,
  title  = {Solving effectively some families of Thue Diophantine equations},
  author = {Claude Levesque and Michel Waldschmidt},
  journal= {arXiv preprint arXiv:1312.7205},
  year   = {2013}
}

Comments

Moscow Journal of Combinatorics and Number Theory, to appear