Date | 2021-05-06 |
---|---|
Speaker | 김상현 |
Dept. | 고등과학원 수학부 |
Room | 선택 |
Time | 16:00-17:00 |
※ 줌(zoom)
Zoom: https://snu-ac-kr.zoom.us/j/86735555642
회의 ID: 86735555642
For each natural number k, the C^k diffeomorphisms of the circle form a group with function compositions. This definition even extends to real numbers k no less than one by Hölder continuity. We survey algebraic properties of this group, many of which can distinguish various values of k. (Joint work with Thomas Koberda)