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:


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:

vorlesung02_18_02_2025.pdf

Next talk:



Stephanie Chan, The Szpiro ratios of elliptic curves with prescribed torsion
(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)

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, TBA
(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)

Abstract: TBA


Dimitris Koukoulopoulos, TBA
(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)

Abstract: TBA


Matthew de Courcy-Ireland, TBA
(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)

Abstract: TBA


Vivian Kuperberg, TBA
(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)

Abstract: TBA


Martin Widmer, TBA
(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)

Abstract: TBA


Peter Koymans, TBA
(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)

Abstract: TBA


Carlo Pagano, TBA
(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)

Abstract: TBA


Fabien Pazuki, TBA
(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)

Abstract: TBA


Will Sawin, TBA
(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)

Abstract: TBA


Oliver Roche-Newton, TBA
(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)

Abstract: TBA


Davide Lombardo, TBA
(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)

Abstract: TBA


Jan Hendrik Bruinier, TBA
(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)

Abstract: TBA


Sponsors:

We gratefully acknowledge the generous support of: