June 20th, 2023

  • Date:

    June 20th, 2023

  • Speaker:

    Johannes Ebert (Universität Münster)

  • Title

    On the homology of diffeomorphism groups of odd-dimensional manifolds.


    The last 20 years have seen tremendous progress in our understanding of the homology of diffeomorphism groups of even-dimensional manifolds after a suitable stabilization (adding many copies of Sn x Sn), due to work by Madsen--Weiss and Galatius--Randal-Williams. The odd-dimensional case is a mystery until now; the naive generalization of the aforementioned results is certainly false. I will report on some progress that has been made in this direction, in particular about the evaluation of the homology in an important special case, namely the connected sum of many copies of Sn x Sn+1. This is joint work with Jens Reinhold.


    10:00 - 11:30 RTG Lecture 1 (Zachary Greenberg), SR 2.058

    11:30 - 12:00 Get-Together with speaker, SR 2.058

    12:00 - 13:00 Common lunch

    13:00 - 13:30 Informal meeting of PhD students, room 1.062

    13:45 - 14:45 RTG colloquium: Johannes Ebert, SR. 1067

    14:45 - 15:30 Common tea, Faculty meeting room 1.058

    15:30 - 17:00 RTG Lecture 2 (self learning session from Julia Heller), SR 1.067

  • Place: