Objective
The classical Hassle-Weil zeta function of a variety defined over a finite field contains all the number-theoretic information about the variety because it encodes the number of rational points of the variety over all finite fields extending the field of definition. Weil conjectures, proved in full by Deigned, state that the zeta function, which is a priori just a formal power series, is in fact a rational function and that its form is governed by the geometry of the variety. Trying to understand how ' geometric' this zeta function really is, we might ask whiter it is ' motivic' does there exist a rational function with coefficients in the ring of isomorphism classes of varieties (Grothendieck ring) or some other ring of motivic/geometric nature wich specialise to the usual Weil-Weil zeta function? At the heart of the co homological proof of the rationality of the classical Weil-Weil zeta function lays the Escheats fixed point formula applied to the Freebies auto orphism. I propose a Model Theoretic context of difference fields (fields with a distinguished auto orphism) and difference varieties, where the Escheats trace formalism can be mimicked with the distinguished auto orphism playing the role of the Freebies. In this framework I introduce a difference analogue of the zeta function. My main objective is proving the rationality of the difference zeta function. This would entail a variant of the motives nature of the Weil-Weil zeta function, because the difference zeta would specialise to the usual zeta function over finite fields GF (q) for almost all prime powers q. This development would be of great importance in Algebraic Geometry and Number Theory. Upon successful completion of the rationality part, difference analogues of other statements of the Weil conjectures will be investigated. To achive this goal I propose to develop intersection theory and étale cohomology theory for difference varieties and schemes.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences mathematics pure mathematics arithmetics
- natural sciences mathematics pure mathematics geometry
- natural sciences mathematics pure mathematics algebra algebraic geometry
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
FP6-2002-MOBILITY-5
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Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
VILLEURBANNE
France
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