Date | 2016-04-27 |
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Speaker | Jae Choon Cha |
Dept. | Postech |
Room | 129-104 |
Time | 17:00-18:00 |
I will begin with a quick introduction to the Cheeger-Gromov rho invariants from a topological viewpoint, and then present recent quantitative results on how they are related to triangulations and Heegaard splittings of 3-manifolds. I will also discuss quantitative bordism theory and an algebraic notion of controlled chain homotopy, which are the key ingredients of the proofs. Applications to topology of dimension 3 and 4 will be discussed if time permits.