S¹ actions on 5-manifolds
Professor Haibao Duan
Abstract
We
recall the classifications of 4 and 5 dimensional manifolds due to Whitehead, Freedmann, Smale and Barden. Based on these works we show that all 1-connected
4-manifolds can be achieved as quotients of regular circle actions on connected
sums of S2 ´ S3.
Date: |
May 10, 2007 (Thursday) |
Time: |
4:00 – 5:00pm |
Place: |
Room 517, Meng Wah Complex, HKU |
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All are
welcome |
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