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
YouTube Channel: https://www.youtube.com/@numbertheorywebseminar
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.
vorlesung02_18_02_2025.pdf
Next talk:
Stephanie Chan, The Szpiro ratios of elliptic curves with prescribed torsion
(IST Austria)
(IST Austria)
Thursday, April 3, 2025 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm IDT, 8:30pm IST, 11pm CST)
Friday, April 4, 2025 (2am AEDT, 4am NZDT)
Friday, April 4, 2025 (2am AEDT, 4am NZDT)
Abstract: We demonstrate that almost all elliptic curves over Q with prescribed torsion subgroup, when ordered by naive height, have Szpiro ratio arbitrarily close to the expected value. The results are achieved by proving that, given any multivariate polynomial within a general class, the absolute value of the polynomial over an expanding box is typically bounded by a fixed power of its radical. The proof adapts work of Fouvry--Nair--Tenenbaum, which shows that almost all elliptic curves have Szpiro ratio close to 1.
Upcoming talks:
Mayank Pandey, Squarefree numbers in short intervals and related results
(Princeton University)
(Princeton University)
Thursday, April 10, 2025 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm IDT, 8:30pm IST, 11pm CST)
Friday, April 11, 2025 (1am AEST, 3am NZST)
Friday, April 11, 2025 (1am AEST, 3am NZST)
Abstract: We will discuss recent work on an improved upper bound on the sizes of gaps between squarefree numbers. Time permitting, we will also discuss upcoming work concerning representations of integers by ternary cubic linear in each variable, in which nilsequences also arise in a similar fashion.
Dimitris Koukoulopoulos, TBA
(University of Montreal)
(University of Montreal)
Thursday, April 17, 2025 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm IDT, 8:30pm IST, 11pm CST)
Friday, April 18, 2025 (1am AEST, 3am NZST)
Friday, April 18, 2025 (1am AEST, 3am NZST)
Abstract: TBA
Matthew de Courcy-Ireland, TBA
(Stockholm University)
(Stockholm University)
Thursday, April 24, 2025 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm IDT, 8:30pm IST, 11pm CST)
Friday, April 25, 2025 (1am AEST, 3am NZST)
Friday, April 25, 2025 (1am AEST, 3am NZST)
Abstract: TBA
Vivian Kuperberg, TBA
(ETH Zürich)
(ETH Zürich)
Thursday, May 1, 2025 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm IDT, 8:30pm IST, 11pm CST)
Friday, May 2, 2025 (1am AEST, 3am NZST)
Friday, May 2, 2025 (1am AEST, 3am NZST)
Abstract: TBA
Martin Widmer, TBA
(Royal Holloway, University of London)
(Royal Holloway, University of London)
Thursday, May 8, 2025 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm IDT, 8:30pm IST, 11pm CST)
Friday, May 9, 2025 (1am AEST, 3am NZST)
Friday, May 9, 2025 (1am AEST, 3am NZST)
Abstract: TBA
Peter Koymans, TBA
(Utrecht University)
(Utrecht University)
Thursday, May 15, 2025 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm IDT, 8:30pm IST, 11pm CST)
Friday, May 16, 2025 (1am AEST, 3am NZST)
Friday, May 16, 2025 (1am AEST, 3am NZST)
Abstract: TBA
Carlo Pagano, TBA
(Concordia University)
(Concordia University)
Thursday, May 22, 2025 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm IDT, 8:30pm IST, 11pm CST)
Friday, May 23, 2025 (1am AEST, 3am NZST)
Friday, May 23, 2025 (1am AEST, 3am NZST)
Abstract: TBA
Fabien Pazuki, TBA
(University of Copenhagen)
(University of Copenhagen)
Thursday, May 29, 2025 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm IDT, 8:30pm IST, 11pm CST)
Friday, May 30, 2025 (1am AEST, 3am NZST)
Friday, May 30, 2025 (1am AEST, 3am NZST)
Abstract: TBA
Will Sawin, TBA
(Princeton University)
(Princeton University)
Thursday, June 5, 2025 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm IDT, 8:30pm IST, 11pm CST)
Friday, June 6, 2025 (1am AEST, 3am NZST)
Friday, June 6, 2025 (1am AEST, 3am NZST)
Abstract: TBA
Oliver Roche-Newton, TBA
(Johannes Kepler University)
(Johannes Kepler University)
Thursday, June 12, 2025 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm IDT, 8:30pm IST, 11pm CST)
Friday, June 13, 2025 (1am AEST, 3am NZST)
Friday, June 13, 2025 (1am AEST, 3am NZST)
Abstract: TBA
Davide Lombardo, TBA
(University of Pisa)
(University of Pisa)
Thursday, June 19, 2025 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm IDT, 8:30pm IST, 11pm CST)
Friday, June 20, 2025 (1am AEST, 3am NZST)
Friday, June 20, 2025 (1am AEST, 3am NZST)
Abstract: TBA
Jan Hendrik Bruinier, TBA
(TU Darmstadt)
(TU Darmstadt)
Thursday, June 26, 2025 (8am PDT, 11am EDT, 4pm BST, 5pm CEST, 6pm IDT, 8:30pm IST, 11pm CST)
Friday, June 27, 2025 (1am AEST, 3am NZST)
Friday, June 27, 2025 (1am AEST, 3am NZST)
Abstract: TBA
Summer Break
(1 July - 31 August)
(1 July - 31 August)
Sponsors:
We gratefully acknowledge the generous support of:
University of Basel (financial support, zoom licence)
University of New South Wales (financial support, zoom licence)
Max Planck Institute for Mathematics (zoom licence, 2020)