Number Theory Web Seminar

This number theory seminar is purely online. Our talks come from various corners of the field and of the world. They are streamed live on Zoom.

Organizers:

  • Michael Bennett (University of British Columbia)

  • Philipp Habegger (University of Basel)

  • Alina Ostafe (UNSW Sydney)


There are no fees, but registration is necessary. To register please follow this link.

Registered users will receive an email a few hours before the talk with a link to the Zoom meeting.

The seminar runs every Thursday. Please note the usual times of the seminar below and in the FAQ Section.

Talks are usually 50 minutes and then time for some questions.

Contact: ntweb.seminar@gmail.com

Please consider the following:

  • Each talk has a unique Zoom meeting-ID that all registered participants receive by email before the talk. You will receive this email from organizers@ntwebseminar.org. Never publicly share this ID or the password.

  • If you did not received an invitation one hour before the talk please check your spam folder. If you cannot find the email there please contact ntweb.seminar@gmail.com.

  • Some mail servers are blocking our domain. Registered participants can click here to get the link to the next talk.

  • To unsubscribe from the mailing list please follow the link at the bottom of the invitation email.

  • Participant's audio is muted by default. You can unmute to ask questions.

  • You can ask questions in the chat window or by unmuting the microphone and asking them directly.

Next talk:



Arno Fehm, Is Z diophantine in Q?
(Technische Universität Dresden)


Thursday, July 29, 2021 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm Israel Daylight Time, 8:30pm Indian Standard Time, 11pm CST)
Friday, July 30, 2021 (1am AEST, 3am NZST)

Abstract: Are the integers the projection of the rational zeros of a polynomial in several variables onto the first coordinate? The aim of this talk is to motivate and discuss this longstanding question. I will survey some results regarding diophantine sets and Hilbert's tenth problem (the existence of an algorithm that decides whether a polynomial has a zero) in fields and will discuss a few conjectures, some classical and some more recent, that suggest that the answer to the question should be negative.


Upcoming talks:

Frank Calegari, Digits
(University of Chicago)


Thursday, August 5, 2021 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm Israel Daylight Time, 8:30pm Indian Standard Time, 11pm CST)
Friday, August 6, 2021 (1am AEST, 3am NZST)

Abstract: We discuss some results concerning the decimal expansion of 1/p for primes p, some due to Gauss, and some from the present day. This is work in progress with Soundararajan which we may well write up one day.


Francesco Amoroso, Bounded Height in Pencils of Subgroups of finite rank
(University of Caen)


Thursday, August 12, 2021 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm Israel Daylight Time, 8:30pm Indian Standard Time, 11pm CST)
Friday, August 13, 2021 (1am AEST, 3am NZST)

Abstract: tba


Zeev Dvir, tba
(Princeton University)


Thursday, August 19, 2021 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm Israel Daylight Time, 8:30pm Indian Standard Time, 11pm CST)
Friday, August 20, 2021 (1am AEST, 3am NZST)

Abstract: tba


Alexandru Zaharescu, tba
(University of Illinois at Urbana-Champaign)


Thursday, August 26, 2021 (1pm PDT, 4pm EDT, 9pm BST, 10pm CEST, 11pm Israel Daylight Time)
Friday, August 27, 2021 (1:30am Indian Standard Time, 4am CST, 6am AEST, 8am NZST)

Abstract: tba


Lars Kühne, tba
(University of Copenhagen)


Thursday, September 2, 2021 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm Israel Daylight Time, 8:30pm Indian Standard Time, 11pm CST)
Friday, September 3, 2021 (1am AEST, 3am NZST)

Abstract: tba


Emmanuel Kowalski, tba
(ETH Zürich)


Thursday, September 9, 2021 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm Israel Daylight Time, 8:30pm Indian Standard Time, 11pm CST)
Friday, September 10, 2021 (1am AEST, 3am NZST)

Abstract: tba


Martin Sombra, tba
(ICREA and University of Barcelona)


Thursday, September 16, 2021 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm Israel Daylight Time, 8:30pm Indian Standard Time, 11pm CST)
Friday, September 17, 2021 (1am AEST, 3am NZST)

Abstract: tba


Alina Carmen Cojocaru, tba
(University of Illinois at Chicago)


Thursday, September 23, 2021 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm Israel Daylight Time, 8:30pm Indian Standard Time, 11pm CST)
Friday, September 24, 2021 (1am AEST, 3am NZST)

Abstract: tba


Anish Ghosh, tba
(Tata Institute of Fundamental Research)


Thursday, September 30, 2021 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm Israel Daylight Time, 8:30pm Indian Standard Time, 11pm CST)
Friday, October 1, 2021 (1am AEST, 4am NZDT)

Abstract: tba


Henryk Iwaniec, tba
(Rutgers University)


Thursday, October 7, 2021 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm Israel Daylight Time, 8:30pm Indian Standard Time, 11pm CST)
Friday, October 8, 2021 (2am AEST, 4am NZST)

Abstract: tba


Jean-Marc Deshouillers, tba
(University of Bordeaux)


Thursday, October 14, 2021 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm Israel Daylight Time, 8:30pm Indian Standard Time, 11pm CST)
Friday, October 15, 2021 (2am AEST, 4am NZST)

Abstract: tba


Johan Commelin, tba
(Albert–Ludwigs-Universität Freiburg)


Thursday, October 21, 2021 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm Israel Daylight Time, 8:30pm Indian Standard Time, 11pm CST)
Friday, October 22, 2021 (2am AEST, 4am NZST)

Abstract: tba


Dimitris Koukoulopoulos, tba
(University of Montreal)


Thursday, October 28, 2021 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm Israel Daylight Time, 8:30pm Indian Standard Time, 11pm CST)
Friday, October 29, 2021 (2am AEST, 4am NZST)

Abstract: tba


Katherine Stange, tba
(University of Colorado, Boulder)


Thursday, November 4, 2021 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm Israel Daylight Time, 9:30pm Indian Standard Time)
Friday, November 5, 2021 (12am CST, 3am AEST, 5am NZST)

Abstract: tba


Myrto Mavraki, tba
(Harvard University)


Thursday, November 18, 2021 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm Israel Daylight Time, 9:30pm Indian Standard Time)
Friday, November 19, 2021 (12am CST, 3am AEST, 5am NZST)

Abstract: tba


Alexei Skorobogatov, tba
(Imperial College London)


Thursday, November 25, 2021 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm Israel Daylight Time, 9:30pm Indian Standard Time)
Friday, November 26, 2021 (12am CST, 3am AEST, 5am NZST)

Abstract: tba


Kiran Kedlaya, tba
(University of California San Diego)


Thursday, December 2, 2021 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm Israel Daylight Time, 9:30pm Indian Standard Time)
Friday, December 3, 2021 (12am CST, 3am AEST, 5am NZST)

Abstract: tba


Sponsors:

We gratefully acknowledge the generous support of:

  • University of Basel (financial support, zoom licence)

  • Max Planck Institute for Mathematics (zoom licence, 2020)