Recovering modular forms and representations from tensor and symmetric powers
Number Theory
2007-05-23 v1
Abstract
We consider the problem of determining the relationship between two representations knowing that some tensor or symmetric power of the original represetations coincide. Combined with refinements of strong multiplicity one, we show that if the characters of some tensor or symmetric powers of two absolutely irreducible -adic representation with the algebraic envelope of the image being connected, agree at the Frobenius elements corresponding to a set of places of positive upper density, then the representations are twists of each other by a finite order character.
Cite
@article{arxiv.math/0410387,
title = {Recovering modular forms and representations from tensor and symmetric powers},
author = {C. S. Rajan},
journal= {arXiv preprint arXiv:math/0410387},
year = {2007}
}
Comments
18 pages; this is a revised version of a paper submitted to the old Number Theory archive as ANT-0357