A relaxed-pace seminar on impromptu subjects related to the interests of the audience.
Everyone is welcome.
The subjects are geometry, probability, combinatorics, dynamics, and more!
Time | Items |
---|---|
All day |
|
10am |
11/17/2023 - 10:00am A relaxed-pace seminar on impromptu subjects related to the interests of the audience. Everyone is welcome. The subjects are geometry, probability, combinatorics, dynamics, and more! Location:
KT 801
|
2pm |
11/17/2023 - 2:00pm Abstract: It has been a classical question which manifolds admit Riemannian metrics with positive scalar curvature. A manifold is called aspherical if it has contractible universal cover. By works of Chodosh—Li, Gromov, and Chodosh—Li—Liokumovich, for n = 4, 5, the connected sum of a closed aspherical n-manifold with an arbitrary closed manifold does not admit a metric with positive scalar curvature. We prove that for n = 3,4,5, the connected sum of a closed aspherical n-manifold with an arbitrary non-compact manifold does not admit a complete metric with nonnegative scalar curvature. In particular, a special case of our result answers a question of Gromov. This is joint work with Jianchun Chu and Jintian Zhu. Location:
KT 906
|
Links
[1] https://math.yale.edu/calendar/grid/day/2023-11-16
[2] https://math.yale.edu/calendar/grid/day/2023-11-18
[3] https://math.yale.edu/event/friday-morning-seminar-42
[4] https://math.yale.edu/event/positive-scalar-curvature-metric-and-aspherical-summands
[5] https://math.yale.edu/print/list/calendar/grid/day/2023-11-17
[6] webcal://math.yale.edu/calendar/export.ics