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Talks and seminars, possibly part of a conference or series.

New bounds on growth in SL_n

Posted in
Speaker: 
Harald Helfgott (University of Göttingen)
Organiser(s): 
Rudradip Biswas (University of Manchester/MPIM)
Date: 
Thu, 2021-07-29 16:00 - 17:00
Parent event: 
Extra talk

Zoom ID: 992 4902 2878
https://zoom.us/j/99249022878

Braid varieties and algebraic weaves

Posted in
Speaker: 
Jose Simental Rodriguez
Affiliation: 
MPIM
Date: 
Thu, 2021-08-12 15:00 - 16:00
Parent event: 
MPI-Oberseminar

https://zoom.us/j/93172910947
Meeting ID: 931 7291 0947
For password please contact Christian Kaiser (kaiser@mpim-bonn.mpg.de).

Symmetries of 4-manifolds

Posted in
Speaker: 
Mark Powell
Affiliation: 
University of Durham/MPIM
Date: 
Thu, 2021-08-05 15:00 - 16:00
Parent event: 
MPI-Oberseminar

https://zoom.us/j/93172910947
Meeting ID: 931 7291 0947
For passcode of this talk please contact Pieter Moree (moree@mpim-bonn.mpg.de)

 

Elliptic curves and chromatic homotopy theory

Posted in
Speaker: 
Irina Bobkova
Affiliation: 
Texas A&M University/z.Z. MPIM
Date: 
Thu, 2021-07-29 15:00 - 16:00
Parent event: 
MPI-Oberseminar

https://zoom.us/j/93172910947
Meeting ID: 931 7291 0947
For passcode of this talk please contact Tobias Barthel (tbarthel@mpim-bonn.mpg.de)

CANCELLED -- The Pontryagin–Thom construction in equivariant homotopy theory

Posted in
Speaker: 
Tobias Lenz
Affiliation: 
MPIM
Date: 
Wed, 2021-07-21 16:15 - 17:45
Parent event: 
IMPRS seminar on various topics: Thom spectra and the Pontryagin–Thom construction


For passcode contact Christian Kaiser (kaiser@mpim...).

The homotopy type of the cobordism category

Posted in
Speaker: 
Florian Kranhold
Affiliation: 
MPIM
Date: 
Mon, 2021-07-19 10:15 - 11:45
Parent event: 
IMPRS seminar on various topics: Thom spectra and the Pontryagin–Thom construction

https://zoom.us/j/99428054844?pwd=NXlRVmJobUhFZTFtQUQrZ29RZk81dz09

Meeting-ID: 994 2805 4844
For passcode contact Christian Kaiser (kaiser@mpim...).

Isoperimetric inequality for Hausdorff contents and its applications

Posted in
Speaker: 
Alexander Nabutovsky
Affiliation: 
University of Toronto/MPIM
Date: 
Thu, 2021-07-22 15:00 - 16:00
Parent event: 
MPI-Oberseminar

https://zoom.us/j/93172910947
Meeting ID: 931 7291 0947
For passcode please contact Christian Kaiser (kaiser@mpim-bonn.mpg.de).
 

Landau and Ramanujan approximations for divisor sums and coefficients of cusp forms

Posted in
Speaker: 
Emil-Alexandru Ciolan
Affiliation: 
MPIM
Date: 
Wed, 2021-08-11 14:30 - 15:30
Parent event: 
Number theory lunch seminar

Zoom ID: 919 6497 4060. For password please contact Pieter Moree (moree@mpim...).

 

About quasi-modular forms, differential operators and Rankin-Cohen algebras

Posted in
Speaker: 
Younes Nikdelan
Affiliation: 
MPIM
Date: 
Wed, 2021-08-04 14:30 - 15:30
Parent event: 
Number theory lunch seminar

In this talk we treat two problems which are parts of an ongoing work. The first one is
a generalization of the canonical Rankin-Cohen structure to the graded algebras which
contain elements of negative degree, namely a generalization of Proposition 1 of
"D. Zagier, Modular forms and differential operators. Proceedings Mathematical Sciences,
104(1):57{75, 1994". The second problem is to give some sufficient conditions under which
a certain combination of a weight 2 quasi-modular form with itself or with an arbitrary modular

Strong approximation, equidistribution and geometric sieve

Posted in
Speaker: 
Jeff Huang
Affiliation: 
Leibniz Universität Hannover/MPIM
Date: 
Wed, 2021-07-21 14:30 - 15:30
Parent event: 
Number theory lunch seminar

Zoom ID: 919 6497 4060. For password please contact Pieter Moree (moree@mpim...).

Natural maps in higher Teichmüller theory

Posted in
Speaker: 
Ivo Marcel Slegers
Affiliation: 
Univ. Bonn/MPIM
Date: 
Thu, 2021-07-15 11:15 - 12:15
Parent event: 
Promotionskolloquium

Das Kolloquium findet per Videokonferenz statt.
Zur Teilnahme am Kolloquium per Videokonferenz
schicken Sie bitte eine E-Mail an 
Ivo Slegers (islegers@math.uni-bonn.de).

A sparse equidistribution problem for expanding horocycles on the modular surface

Posted in
Speaker: 
Claire Burrin
Affiliation: 
ETHZ/z. Z. HIM
Date: 
Wed, 2021-08-18 14:30 - 15:30
Parent event: 
Number theory lunch seminar

The orbits of the horocycle flow on hyperbolic surfaces are classified: each orbit is either dense or a closed horocycle around a cusp. Expanding closed horocycles are themselves asymptotically dense, and in fact become equidistributed on the surface. The precise rate of equidistribution is of interest; on the modular surface, Zagier observed that a particular rate is equivalent to the Riemann hypothesis being true. I will discuss the asymptotic behavior of evenly spaced points along an expanding closed horocycle. This is based on joint work with Uri Shapira and Shucheng Yu.

On steady Kähler-Ricci solitons

Posted in
Speaker: 
Johannes Schäfer
Affiliation: 
MPIM
Date: 
Mon, 2021-07-12 10:15 - 11:15
Parent event: 
Promotionskolloquium

Das Kolloquium findet per Videokonferenz statt.
Zur Teilnahme am Kolloquium per Videokonferenz
schicken Sie bitte eine E-Mail an 
Johannes Schäfer (jschafer@math.uni-bonn.de).

On the hyperbolic prime number theorem

Posted in
Speaker: 
Alisa Sedunova
Affiliation: 
z. Z. HIM, Bonn
Date: 
Wed, 2021-07-14 14:30 - 15:30
Parent event: 
Number theory lunch seminar

Zoom Meeting ID: 919 6497 4060

Lecture course "From 3-manifold invariants to number theory"

Posted in
Speaker: 
Don Zagier
Affiliation: 
MPIM/ICTP
Date: 
Fri, 2021-07-16 14:00 - 16:00

https://zoom.us/j/96952516566?pwd=Z3NyZW04M2YxSHo2MWdlOHJ4MlNpUT09
Meeting ID: 969 5251 6566
Passcode: 307018

 


      


      
    

  


   

  

    

  

    


              
Lecture course "From 3-manifold invariants to number theory"

      
      
      
      
              
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              Speaker: 

                    Don Zagier        

        





    

            

                      

              Affiliation: 

                    MPIM/ICTP        

        





    

            

                      

              Date: 

                    Mon, 2021-07-12 16:00 - 18:00        

        




https://zoom.us/j/96952516566?pwd=Z3NyZW04M2YxSHo2MWdlOHJ4MlNpUT09
Meeting ID: 969 5251 6566
Passcode: 307018

 



      


      
    

  


   

  

    

  

    


              
Derived differential geometry and quantization

      
      
      
      
              
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              Speaker: 

                    David Carchedi        

        





    

            

                      

              Affiliation: 

                    George Mason University/MPIM        

        





    

            

                      

              Date: 

                    Thu, 2021-07-15 15:00 - 16:00        

        





    

            

                      

              Parent event: 

                    MPI-Oberseminar        

        




https://zoom.us/j/93172910947
Meeting ID: 931 7291 0947
For passcode please contact Christian Kaiser (kaiser@mpim-bonn.mpg.de).
      


              

      
    

  


   

  

    

  

    


              
Atiyah duality

      
      
      
      
              
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              Speaker: 

                    Bastiaan Cnossen        

        





    

            

                      

              Affiliation: 

                    MPIM        

        





    

            

                      

              Date: 

                    Wed, 2021-07-14 16:15 - 17:45        

        





    

            

                      

              Parent event: 

                    IMPRS seminar on various topics: Thom spectra and the Pontryagin–Thom construction        

        




https://zoom.us/j/99428054844?pwd=NXlRVmJobUhFZTFtQUQrZ29RZk81dz09
Meeting-ID: 994 2805 4844
For passcode contact Christian Kaiser (kaiser@mpim-bonn.mpg.de).
      


      
    

  


   

  

    

  

    


              
Operads of musical phrases and generation

      
      
      
      
              
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              Speaker: 

                    Samuele Giraudo        

        





    

            

                      

              Affiliation: 

                    Université Gustave Eiffel        

        





    

            

                      

              Date: 

                    Tue, 2021-07-27 14:00 - 15:30        

        





    

            

                      

              Parent event: 

                    Seminar on Algebra, Geometry and Physics/joint with HU Berlin         

        




https://hu-berlin.zoom.us/j/61339297016
      


              

      
    

  


   

  

    

  

    


              
Zeta statistics

      
      
      
      
              
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              Speaker: 

                    Margaret Bilu        

        





    

            

                      

              Affiliation: 

                    IST Austria        

        





    

            

                      

              Date: 

                    Tue, 2021-07-20 14:00 - 15:30        

        





    

            

                      

              Parent event: 

                    Seminar on Algebra, Geometry and Physics/joint with HU Berlin         

        




https://hu-berlin.zoom.us/j/61339297016
      


              

      
    

  


   

    

  
      
  
  
  
      

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