Submission date: 6 December 2011

Abstract:

We give an algebraic description of definable sets over fields with Frobenius in terms of twisted Galois formulae associated with finite Galois covers of difference schemes.

Mathematics Subject Classification: 03C60, 11G25 (Primary) 14G10, 14G15 (Secondary)

Keywords and phrases:

Full text arXiv 1112.0802: pdf, ps.