Future seminars

Seminar information archive ~02/24Today's seminar 02/25 | Future seminars 02/26~

2021/03/10

Number Theory Seminar

17:00-18:00   Online
Katsuyuki Bando (University of Tokyo)
Geometric Satake equivalence in mixed characteristic and Springer correspondence (Japanese)
[ Abstract ]
The geometric Satake correspondence is an equivalence between the category of equivariant perverse sheaves on the affine Grassmannian and the category of representations of the Langlands dual group. It is known that there is a mixed characteristic version of the geometric Satake correspondence. The Springer correspondence is a correspondence between the category of equivariant perverse sheaves on the nilpotent cone and the category of representation of the Weyl group. In this talk, we will explain some relation between these two correspondences, including the mixed characteristic case.

2021/03/11

Information Mathematics Seminar

16:50-18:35   Online
Akiyoshi Sannai (RIKEN)
Deep learning with symmetry (Japanese)
[ Abstract ]
Explanation on deep learning with symmetry
[ Reference URL ]
https://docs.google.com/forms/d/1yIKNrwSLsdYt_rivZI8JxhIu3kWtJua5hG8nV5FYbCk/

Tokyo-Nagoya Algebra Seminar

-   Online
Please see the URL below for details on the online seminar.
Akihito Wachi (Hokkaido University of Education)
相対不変式で生成されるゴレンスタイン環のレフシェッツ性 (Japanese)
[ Abstract ]
TBA
[ Reference URL ]
http://www.math.nagoya-u.ac.jp/~aaron.chan/TNAseminar.html

2021/03/17

Lectures

17:30-18:30   Online
Day 1 of a series of three lectures (3/17,18,19)
Matthew Morrow (CNRS, IMJ-PRG)
Progress in syntomic cohomology (ENGLISH)
[ Abstract ]
The talks will present a survey of the (quasi)syntomic cohomology theory introduced by Bhatt, Scholze, and the speaker; this provides a variant of the syntomic cohomology of Fontaine, Kato, and Messing which has the advantage of being defined in a greater degree of generality and working well with torsion coefficients even for small primes. Although it underlies in principle a general theory of p-adic étale motivic cohomology, the talks will probably focus more on arithmetic aspects such as applications in p-adic Hodge theory. Based on various projects joint with Antieau, Bhatt, Clausen, Kelly, Lüders, Mathew, Nikolaus, and Scholze.
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~shiho/spparis/index.html

2021/03/18

Lectures

17:30-18:30   Online
Day 2 of a series of three lectures (3/17,18,19)
Matthew Morrow (CNRS, IMJ-PRG)
Progress in syntomic cohomology (ENGLISH)
[ Abstract ]
The talks will present a survey of the (quasi)syntomic cohomology theory introduced by Bhatt, Scholze, and the speaker; this provides a variant of the syntomic cohomology of Fontaine, Kato, and Messing which has the advantage of being defined in a greater degree of generality and working well with torsion coefficients even for small primes. Although it underlies in principle a general theory of p-adic étale motivic cohomology, the talks will probably focus more on arithmetic aspects such as applications in p-adic Hodge theory. Based on various projects joint with Antieau, Bhatt, Clausen, Kelly, Lüders, Mathew, Nikolaus, and Scholze.
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~shiho/spparis/index.html

2021/03/19

Colloquium

15:00-17:30   Online
Yoshikazu Giga (University of Tokyo) 15:00-16:00
Effects of viscosity and diffusion described by differential equations (JAPANESE)
Toshitake Kohno (Meiji University/University of Tokyo) 16:30-17:30
Monodromy representations in higher categories and iterated integrals (JAPANESE)

Lectures

17:30-18:30   Online
Day 3 of a series of three lectures (3/17,18,19)
Matthew Morrow (CNRS, IMJ-PRG)
Progress in syntomic cohomology (ENGLISH)
[ Abstract ]
The talks will present a survey of the (quasi)syntomic cohomology theory introduced by Bhatt, Scholze, and the speaker; this provides a variant of the syntomic cohomology of Fontaine, Kato, and Messing which has the advantage of being defined in a greater degree of generality and working well with torsion coefficients even for small primes. Although it underlies in principle a general theory of p-adic étale motivic cohomology, the talks will probably focus more on arithmetic aspects such as applications in p-adic Hodge theory. Based on various projects joint with Antieau, Bhatt, Clausen, Kelly, Lüders, Mathew, Nikolaus, and Scholze.
[ Reference URL ]
https://www.ms.u-tokyo.ac.jp/~shiho/spparis/index.html