Euclid's Elements


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Peking Online International Number Theory Seminar (POINTS)


This seminar series is sponsored by the Beijing International Center of Mathematical Research (BICMR) and the School of Mathematical Sciences of Peking University (SMS-PKU).




The seminars usually take place on Wednesday evenings (UTC +8), presumably via Zoom. By default, the talks will be given in English. The official announcements of our talks will appear on the websites of BICMR and/or SMS-PKU. The talks will also be announced on .

The slides or videos, if available, can be found on the page of Past talks.

If you are willing to give a talk, please feel free to contact any one of the organizers below. Their E-mail addresses can be easily found on the websites of BICMR or SMS-PKU.


  • Yiwen Ding
  • Wen-Wei Li
  • Ruochuan Liu
  • Zhiyu Tian
  • Liang Xiao
  • Enlin Yang
  • Xinyi Yuan

Upcoming talks

Lovely pairs of valued fields and adic spaces

Speaker: Jinhe Ye (MSRI)

Time: 16:00-17:00, October 21, 2020 (UTC+8)

Abstract: Hrushovski and Loeser used the space \(\widehat{V}\) of generically stable types concentrating on \(V\) to study the topology of Berkovich analytification \(V^{an}\) of \(V\). In this talk we will give a brief introduction to this object and present an alternative approach, based on lovely pairs of valued fields, to study various analytifications using model theory. We will provide a model-theoretic counterpart \(\widetilde{V}\) of the Huber's analytification of \(V\). We show that, the same as for \(\widehat{V}\), the space \(\widetilde{V}\) is strict pro-definable.

Furthermore, we will discuss canonical liftings of the deformation retraction developed by Hrushovski and Loeser. This is a joint project with Pablo Cubides-Kovacsics and Martin Hils.

Venue: Science Building 1, room 1303, Peking University (Yanyuan campus)

Zoom info:

Meeting ID: 649 4104 826

Passowrd: 143688


Speaker: Ariyan Javanpeykar (Johannes Gutenberg-Universität Mainz)

Time: TBA, November 25, 2020 (UTC+8)

Abstract: TBA