Date | 2022-11-01 |
---|---|

Speaker | 강성경 |

Dept. | 기초과학연구원 |

Room | 129-101 |

Time | 16:00-16:30 |

For simply-connected 4-manifolds, it is known that all exotic structures become diffeomorphic after taking finitely many stabilizations, i.e. taking a connected sum with S^{2} X S^{2} In this talk, we construct a first example of a cork which does not trivialize after one stabilization, Combined with a work of Akbulut-Ruberman, this implies the existence of an exotic pair of contractible 4-manifolds which remains absolutely exotic after one stabilization.

일시: 11월 1일 (화) 16:00-16:30

장소: 129동 101호 / https://snu-ac-kr.zoom.us/j/2473239867

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