Math Calendar

Thursday, January 21, 2021
09:30-12:30
GQT Conference
Website of the conference: link.
Friday, January 22, 2021
09:30-12:30
GQT Conference
Website of the conference: link.
Tuesday, January 26, 2021
17:30-19:00
On Zoom
Utrecht Geometry Centre Seminar
Palina Salanevich - TBA

TBA

Website of the seminar: http://utrechtgeometrycentre.nl/ugc-seminar/ 
Zoom details will be sent by email to the staff and student mailing lists a few days before the event. 
Wednesday, January 27, 2021
12:45-14:30
Microsoft Teams
Reading seminar "Arithmetic of K3 surfaces" (online)

The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

Thursday, January 28, 2021
16:00-17:00
TEAMS
Applied Mathematics Seminar -- Pim van der Hoorn (TU/e) --- Convergence of Ollivier-Ricci curvature in random geometric graphs on Riemannian manifolds

Curvature is a fundamental geometric characteristic of smooth spaces. In recent years different notions of curvature have been developed for combinatorial discrete objects such as graphs. However, the connections between such discrete notions of curvature and their smooth counterparts remain unclear. In particular, it is not rigorously known if any notion of graph curvature converges to any traditional notion of curvature of smooth spaces. In this talk I will address this challenge by considering Ollivier-Ricci curvature on random geometric graphs on smooth and complete Riemannian manifolds. I will identify proper settings for which the Ollivier-Ricci curvature converges to the Ricci curvature of the manifold. These results create a bridge between the discrete structure of graphs and continuous geometry underneath them. The results hold for different notions of graph distances, including the rescaled shortest path distance, and for different graph densities, with the average degree ranging from nearly logarithmic to nearly linear in the graph size.

 

This is joint work with William Cunningham, Dmitri Krioukov, Gabor Lippner and Carlo Trugenberger

Friday, January 29, 2021
16:30-17:30
Zoom
Friday Fish Seminar
Marine Fontaine - TBA
TBA

  • Zoom details are sent in the weekly announcements. To join the mailing list you can drop us an email to fridayfishseminar[at]gmail.com.
  • Website of the seminar: http://utrechtgeometrycentre.nl/friday-fish-seminar-online-edition/  
  • Wednesday, February 3, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Friday, February 5, 2021
    16:30-17:30
    Zoom
    Friday Fish Seminar
    Eduardo Fernández - TBA
    TBA

  • Zoom details are sent in the weekly announcements. To join the mailing list you can drop us an email to fridayfishseminar[at]gmail.com.
  • Website of the seminar: http://utrechtgeometrycentre.nl/friday-fish-seminar-online-edition/  
  • 17:30-18:30
    Zoom
    Friday Fish Seminar
    Aldo Witte - TBA
    TBA

  • Zoom details are sent in the weekly announcements. To join the mailing list you can drop us an email to fridayfishseminar[at]gmail.com.
  • Website of the seminar: http://utrechtgeometrycentre.nl/friday-fish-seminar-online-edition/  
  • Tuesday, February 9, 2021
    17:00-18:30
    On Zoom
    Utrecht Geometry Centre Seminar
    Lennart Meier - TBA

    TBA

    Website of the seminar: http://utrechtgeometrycentre.nl/ugc-seminar/ 
    Zoom details will be sent by email to the staff and student mailing lists a few days before the event. 
    Wednesday, February 10, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, February 17, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, February 24, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, March 3, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, March 10, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, March 17, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, March 24, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, March 31, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, April 7, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, April 14, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, April 21, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, April 28, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, May 5, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, May 12, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, May 19, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, May 26, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, June 2, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, June 9, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, June 16, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, June 23, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, June 30, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, July 7, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html 

    Wednesday, July 14, 2021
    13:15-15:00
    Microsoft Teams
    Reading seminar "Arithmetic of K3 surfaces" (online)

    The seminar will be held online via Microsoft Teams. You can join the team by using the code bahj12a. 

    The (preliminary) schedule for the seminar can be found on https://webspace.science.uu.nl/~karem001/K3sem.html