Title
On the linear independence of shifted powers.
Abstract
We call shifted power a polynomial of the form $(x-a)^e$. The main goal of this paper is to obtain broadly applicable criteria ensuring that the elements of a finite family $F$ of shifted powers are linearly independent or, failing that, to give a lower bound on the dimension of the space of polynomials spanned by $F$. In particular, we give simple criteria ensuring that the dimension of the span of $F$ is at least $c.|F|$ for some absolute constant $c<1$. We also propose conjectures implying the linear independence of the elements of $F$. These conjectures are known to be true for the field of real numbers, but not for the field of complex numbers.
Year
Venue
DocType
2017
CoRR
Journal
Volume
Citations 
PageRank 
abs/1705.03842
0
0.34
References 
Authors
0
3
Name
Order
Citations
PageRank
Ignacio García-Marco100.68
Pascal Koiran2919113.85
Timothée Pecatte300.34