Guest seminar summer 2017
Guest seminar "Arithmetic Geometry"
Time: Thursdays, 2pm4pm
Place: New!! Arnimallee 14 (Physik), room T1 (1.3.21)
Talks:
Date  Speaker(s) 

April 20 
14:15 Johannes Nicaise (Imperial college) Title: A motivic Fubini theorem for the tropicalization map This talk is based on joint work with Sam Payne. I will explain the formulation and proof of a motivic Fubini theorem for the tropicalization map in the context of Hrushovski and Kazhdan's theory of motivic integration. Denef and Loeser's motivic nearby fiber has a natural interpretation in this setting. As an application, I will present a very short and conceptual proof of the integral identity conjecture of Kontsevich and Soibelman, one of the cornerstones of their theory of motivic DonaldsonThomas invariants. This conjecture was previously solved by Le Quy Thuong by means of a related but more involved method. 
May 11 
14:15 Thomas Oliver (Bristol) Title: tba 
June 7 
16:00 Michael Groechenig (Berlin) Infinity categories I (Minicourse) 
June 8 
14:15 Javier Fresán (Zurich) Title: tba 
June 9 
14:00 Michael Groechenig (Berlin) Infinity categories II (Minicourse) 
June 22 
14:15 Alan Thompson (Warwick) Title: Mirror symmetry for lattice polarized del Pezzo surfaces Mirror symmetry for lattice polarized K3 surfaces is a wellestablished correspondence, first studied in the work of Dolgachev and Nikulin. I will discuss the possibility of extending this theory to log CalabiYau surfaces, and in particular to weak del Pezzo surfaces. I will describe how to endow a weak del Pezzo surface with a lattice polarization and how to define the mirror notion of a lattice polarized LandauGinzburg model. Finally, I will discuss how this notion of mirror symmetry should be compatible with DolgachevNikulin mirror symmetry for lattice polarized K3's. 
June 29 
14:15 Raju Krishnamoorthy (Berlin) Title: "On Analogs of the Hasse Invariant"
