Characteristic polynomial patterns in difference sets of matrices
Artikel i vetenskaplig tidskrift, 2016

We show that for every subset E of positive density in the set of integer square-matrices with zero traces, there exists an integer k >= 1 such that the set of characteristic polynomials of matrices in E - E contains the set of all characteristic polynomials of integer matrices with zero traces and entries divisible by k. Our theorem is derived from results by Benoist-Quint on measure rigidity for actions on homogeneous spaces.


Michael Björklund

Göteborgs universitet

Chalmers, Matematiska vetenskaper, Matematik

A. Fish

The University of Sydney

Bulletin of the London Mathematical Society

0024-6093 (ISSN) 1469-2120 (eISSN)

Vol. 48 2 300-308