Symplectic Dynamics Seminar | |

Topic: | Stein Structures: Existence and Flexibility |

Speaker: | Kai Cieliebak |

Affiliation: | Ludwig-Maximilians-Universitat, Munich, Germany |

Date: | Wednesday, February 29 |

Time/Room: | 2:00pm - 3:00pm/S-101 |

This is a series of 3 talks on the topology of Stein manifolds, based on work of Eliashberg since the early 1990ies. More specifically, I wish to explain to what extent Stein structures are flexible, i.e. obey an h-principle. After providing some general background on Stein manifolds, the first talk will focus on the construction of plurisubharmonic functions with specific properties. Using these, I will in the second talk present the proof of Eliashberg's existence theorem for Stein structures. The third talk concerns several flexibility results: an h-cobordism theorem for Stein structures, realization of pseudo-isotopies by Stein structures, and a new class of "flexible Stein structures" that obey a 1-parametric h-principle.