On a multiplicative order of Gauss periods and related questions
arXiv:1008.0972
Abstract
We obtain explicit lower bounds on multiplicative order of elements that have more general form than finite field Gauss period. In a partial case of Gauss period this bound improves the previous bound of O.Ahmadi, I.E.Shparlinski and J.F.Voloch
10 pages, version 2, results changed