Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8897052 | Journal of Number Theory | 2018 | 30 Pages |
Abstract
In this paper, we study the properties of Diophantine exponents wn and wnâ for Laurent series over a finite field. We prove that for an integer nâ¥1 and a rational number w>2nâ1, there exist a strictly increasing sequence of positive integers (kj)jâ¥1 and a sequence of algebraic Laurent series (ξj)jâ¥1 such that degâ¡Î¾j=pkj+1 andw1(ξj)=w1â(ξj)=â¦=wn(ξj)=wnâ(ξj)=w for any jâ¥1. For each nâ¥2, we give explicit examples of Laurent series ξ for which wn(ξ) and wnâ(ξ) are different.
Related Topics
Physical Sciences and Engineering
Mathematics
Algebra and Number Theory
Authors
Tomohiro Ooto,