Seminars & Colloquia Calendar
Symplectic and holomorphic convexity in dimension 4
Bulent Tosun (University of Alabama/IAS)
Location: Hill 705
Date & time: Tuesday, 02 April 2024 at 4:00PM - 5:00PM
Seminar website: https://sites.google.com/view/rutgersgeometrytopologysem2324/home
In this talk, I will review various embedding problems for 3-manifolds. Given a closed, orientable 3-manifold, it is of great interest but often a difficult (and largely open) problem to determine whether the 3-manifold smoothly embeds in 4-dimensional Euclidean space. On the other hand, under additional geometric considerations coming from symplectic topology, such as hypersurfaces of contact type, the problem becomes tractable and in certain cases a uniform answer is possible. In this talk, I will review these concepts and recent results, and explain how they relate to the various notions of convexity (e.g. holomorphic convexity and rational convexity) in complex geometry. I will also report on recent work in progress that extends our results to symplectic 4-manifolds other than Euclidean space, such as rational complex surfaces. This is joint work with T. Mark.
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