Abstract:
Speaker: Charlotte Bartnick (Univ. Freiburg) Time: 10:50-11:40 Location: Hörsaal 114, Kollegienhaus Title: Differentially closed fields of positive characteristic Abstact: Differentially closed fields are the differential equivalent to algebraically closed fields. They provide a setting for model theorists to study differential algebraic questions. In this talk, we will introduce the properties of differentially closed fields in positive characteristic from a model theoretic point of view. In particular, we will describe definable groups. No prior model theoretic knowledge is required. <hr> Speaker: Seoyoung Kim (Univ. Basel) Time: 13:50-14:40 Location: Hörsaal 114, Kollegienhaus Title: An application of Stepanov\'s method and its implication on multiplicative Sarkozy\'s conjecture Abstract: We investigate the multiplicative structure of a shifted multiplicative subgroup and its connections with additive combinatorics and the theory of Diophantine equations. We show that if a nontrivial shift of a multiplicative subgroup G contains a product set AB, then the size of the set |A||B| is essentially bounded by |G|, refining a well-known consequence of a classical result by Vinogradov, and a recent result of Hanson-Petridis based on Stepanov\'s method. Using this, we make progress towards a conjecture of Sarkozy on the multiplicative decompositions of shifted multiplicative subgroups. In particular, we prove that for almost all primes p, the set {x^2-1: x in F_p*} \\{0} cannot be decomposed as the product of two sets in F_p non-trivially. If time permits, we discuss recent progress on Sarkozy\'s conjecture and the Lev-Sonn conjecture. This is a joint work with K. Yip and S. Yoo. <hr> Speaker: Kenza Memlouk (Univ. Strasbourg) Time: 15:10-16:00 Location: Hörsaal 114, Kollegienhaus Title: Multiple zeta values and quiver representations Abstract: In this talk, we are interested in multiple zeta values. They are periods associated to the category MTM(Z) of mixed Tate motives over the ring of integers. Recently, A.Huber and M.Kalck have shown that some subcategories of MTM(Z) are equivalent to representations of some quivers. We will see the implications of this result on motivic multiple zeta values. More precisely, we will compare this point of view with a construction of Goncharov and we will explore this new perspective on formal multiple zeta values. More information on the website: https://rhine-transcendence.github.io/meeting8

09:30 • Universität Basel, Kollegienhaus, Hörsaal 114

Universität Basel

Seminar in Numerical Analysis

Rekha Khot (ENPC et Inria, Paris)

Nonconforming Hybrid Methods (HHO/WG) for the Wave Equation in First-Order Form abstract

11:00 • Universität Basel

EPF Lausanne

Talks in Actuarial Mathematics

Charlotte Jamotton (University of Louvain)

A multi-criteria fair Gaussian regressor for insurance premium abstract

14:00 • EPF Lausanne, Intranef 126

ETH Zürich

Number Theory Seminar

Prof. Dr. Stefan Wewers (Universität Ulm)

Semistable reduction of smooth quartics abstract

14:15 • ETH Zentrum, Rämistrasse 101, Zürich, Building HG, Room G 43

EPF Lausanne

Seminar of Analysis

Josef Greilhuber (Stanford University California)

Hypersurfaces on which few harmonic functions vanish

14:15 • EPF Lausanne, MA B1 11

EPF Lausanne

Statistics Seminar

Po-Ling Loh (University of Cambridge)

Title T.B.A.

15:15 • EPF Lausanne, CM 1 517

Universität Bern

Colloquia on Probability and Statistics

Prof. Dr. Philippe Robbert (INRIA Paris)

Stochastic Models of Regulation of Gene Expression abstract

16:15 • Universität Bern, IMSV, Alpeneggstrasse 22, 3012 Bern, Hörraum -203

address: Alessandra Naldi Windler, Departement Mathematik, HG G 51.4, ETH Zurich, Raemistrasse 101, CH-8092 Zurich
email: bulletin@math.ch | phone: +41 44 632 3684 | url: https://math.ch

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