Séminaires : Séminaire Général de Logique

Equipe(s) : lm,
Responsables :S. Anscombe, V. Bagayoko, D. Basak, H. Fournier
Email des responsables : sylvy.anscombe@imj-prg.fr, bagayoko@imj-prg.fr, basak@imj-prg.fr, fournier@imj-prg.fr
Salle : 1013
Adresse :Sophie Germain
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Orateur(s) Mira Tartarotti (Oxford) - ,
Titre Incidence bounds in positive characteristic and relative distality
Date08/12/2025
Horaire16:00 à 17:00
Diffusion
Résume

Elekes and Szabó established non-trivial incidence bounds for binary algebraic relations in characteristic 0, generalizing the Szemerédi-Trotter theorem for point-line-incidence. This was later generalized to binary relations defined in reducts of so-called distal structures in a result of Chernikov, Peterzil and Starchenko. For fields of positive characteristic, such bounds fail to hold in general. Bays and Martin apply the bounds for distal structures in the context of valued fields to derive incidence bounds in the sense of Szemerédi-Trotter in fields admitting valuations with finite residue field, such as F_p(t). We show that this result can be made uniform in the size of the finite residue field, by making precise in some sense the intuition that ACVF is distal relative to the residue field. In this talk, I will introduce the relevant notions from incidence combinatorics and distality, before outlining a proof of the uniform-in-p result, if time permits.

Salle1013
AdresseSophie Germain
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