Geometry and Topology Seminar: Difference between revisions
| Line 48: | Line 48: | ||
===Yu Li=== | ===Yu Li=== | ||
Ancient solutions model the singularity formation of the Ricci flow. In two and three dimensions, we currently have complete classifications for κ-noncollapsed ancient solutions, while the higher dimensional problem remains open. This talk will survey some recent developments of κ-noncollapsed ancient solutions with nonnegative curvature in higher dimensions. | Ancient solutions model the singularity formation of the Ricci flow. In two and three dimensions, we currently have complete classifications for κ-noncollapsed ancient solutions, while the higher dimensional problem remains open. This talk will survey some recent developments of κ-noncollapsed ancient solutions with nonnegative curvature in higher dimensions. | ||
===Yi Lai=== | |||
We found a family of $\mathbb{Z}_2\times O(2)$-symmetric 3d steady gradient Ricci solitons. We show that these solitons are all flying wings. This confirms a conjecture by Hamilton. | |||
== Archive of past Geometry seminars == | == Archive of past Geometry seminars == | ||
Revision as of 19:54, 12 October 2020
The Geometry and Topology seminar meets in room 901 of Van Vleck Hall on Fridays from 1:20pm - 2:10pm. For more information, contact Shaosai Huang.
In the fall of 2020, we will hold online meetings on
Zoom platform
(available every Friday 1:00pm - 2:30pm).
Fall 2020
| date | speaker | title | host(s) |
|---|---|---|---|
| Oct. 23 | Yu Li (Stony Brook) | On the ancient solutions to the Ricci flow | (Huang) |
| Oct. 30 | Yi Lai (Berkeley) | A family of 3d steady gradient solitons that are flying wings | (Huang) |
| Nov. 6 | Jiyuan Han (Purdue) | TBA | (Chen) |
| Nov. 20 | Max Hallgren (Cornell) | TBA | (Huang) |
| Dec. 4 | Yang Li (IAS) | TBA | (Chen) |
Fall Abstracts
Yu Li
Ancient solutions model the singularity formation of the Ricci flow. In two and three dimensions, we currently have complete classifications for κ-noncollapsed ancient solutions, while the higher dimensional problem remains open. This talk will survey some recent developments of κ-noncollapsed ancient solutions with nonnegative curvature in higher dimensions.
Yi Lai
We found a family of $\mathbb{Z}_2\times O(2)$-symmetric 3d steady gradient Ricci solitons. We show that these solitons are all flying wings. This confirms a conjecture by Hamilton.
Archive of past Geometry seminars
2019-2020 Geometry_and_Topology_Seminar_2019-2020
2018-2019 Geometry_and_Topology_Seminar_2018-2019
2017-2018 Geometry_and_Topology_Seminar_2017-2018
2016-2017 Geometry_and_Topology_Seminar_2016-2017
2015-2016: Geometry_and_Topology_Seminar_2015-2016
2014-2015: Geometry_and_Topology_Seminar_2014-2015
2013-2014: Geometry_and_Topology_Seminar_2013-2014
2012-2013: Geometry_and_Topology_Seminar_2012-2013
2011-2012: Geometry_and_Topology_Seminar_2011-2012
2010: Fall-2010-Geometry-Topology
Dynamics_Seminar_2020-2021