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Berkeley-Tokyo lectures on Number Theory


January 11 (Mon) -- 14 (Thu), 2021 (Berkeley)

January 12 (Tue) -- 15 (Fri), 2021 (Tokyo)


Online (Zoom meeting). If you want to attend, please complete the registration form.


Martin Olsson (UC Berkeley): “Arithmetic and derived categories of coherent sheaves”

In recent years there have been a lot of developments relating the derived category of coherent sheaves D(X) of a variety X over a field k, to arithmetic invariants. The aim of this lecture series is to survey some of these developments. Particular emphasis will be placed on cohomological information that can be extracted from the derived category.
Lecture 1, Lecture 2

Sug Woo Shin (UC Berkeley): “Cohomology of Igusa Varieties”

Parts (roughly corresponding to the four lectures):
  1. Modular curves and Igusa curves
  2. Points of Shimura varieties in char p
  3. Points of Igusa varieties in char p
  4. Applications to geometry
Lecture 1, Lecture 2, Lecture 3


Time in Berkeley

11 (Mon) 12 (Tue) 13 (Wed) 14 (Thu)
16:00--17:00 Olsson Shin (16:45--17:45) Olsson Shin
17:15--18:15 Shin Olsson (18:00--19:00) Shin Olsson
18:30--19:15 Discussion Discussion Discussion

Time in Tokyo

12 (Tue)13 (Wed)14 (Thu)15 (Fri)
9:00--10:00 Olsson Shin (9:45--10:45) Olsson Shin
10:15--11:15 Shin Olsson (11:00--12:00) Shin Olsson
11:30--12:15 Discussion Discussion Discussion
Yoichi MIEDA, Email