Date | Mar 07, 2022 |
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Speaker | 황택규 |

Dept. | 아주대학교 |

Room | 선택 |

Time | 18:00-20:00 |

Meeting id 611 507 9832

https://snu-ac-kr.zoom.us/j/6115079832

초록: The Hofer-Zehnder capacity is the supremum of the Hofer norm over the admissible Hamiltonians. By a result of Lu, it is bounded by the symplectic area of a curve for a non-vanishing Gromov-Witten invariant with 2 point insertions. The purpose of the talk is to explain how to find such invariants using Hamiltonian circle actions. I will review a computation on the Seidel representation by McDuff and Tolman, and then use this to obtain the desired invariant.

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