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Conference Paper: Contraction algebra and invariants of singularities
Title | Contraction algebra and invariants of singularities |
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Other Titles | Contraction algebra and invariants associated to three dimensional flopping contraction |
Authors | |
Issue Date | 2016 |
Citation | Geometry, Symmetry and Physics Seminar, Spring 2016, Rutgers University, Piscataway, NJ, USA, 21 April 2016 How to Cite? |
Abstract | The contraction algebra is defined by Donovan and Wemyss in the study of noncommutative deformation theory. In this talk, we will explain how to use contraction algebra to study the three dimensional flopping contraction. We will show that the derived category of singularities and the subcategory of complexes support on the exceptional curve can be reconstructed from the contraction algebra. These reconstruction theorems suggest that the contraction algebra can be viewed as a noncommutative analogue of the Milnor ring of hyper surface singularity. We will also explain how to recover the genus 0 Gopakumar-Vafa invariants from the contraction algebra.
This talk is based on a joint work with Yukinobu Toda: arrive: 1601.04881. |
Persistent Identifier | http://hdl.handle.net/10722/252399 |
DC Field | Value | Language |
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dc.contributor.author | Hua, Z | - |
dc.date.accessioned | 2018-04-19T09:22:12Z | - |
dc.date.available | 2018-04-19T09:22:12Z | - |
dc.date.issued | 2016 | - |
dc.identifier.citation | Geometry, Symmetry and Physics Seminar, Spring 2016, Rutgers University, Piscataway, NJ, USA, 21 April 2016 | - |
dc.identifier.uri | http://hdl.handle.net/10722/252399 | - |
dc.description.abstract | The contraction algebra is defined by Donovan and Wemyss in the study of noncommutative deformation theory. In this talk, we will explain how to use contraction algebra to study the three dimensional flopping contraction. We will show that the derived category of singularities and the subcategory of complexes support on the exceptional curve can be reconstructed from the contraction algebra. These reconstruction theorems suggest that the contraction algebra can be viewed as a noncommutative analogue of the Milnor ring of hyper surface singularity. We will also explain how to recover the genus 0 Gopakumar-Vafa invariants from the contraction algebra. This talk is based on a joint work with Yukinobu Toda: arrive: 1601.04881. | - |
dc.language | eng | - |
dc.relation.ispartof | Rutgers University, Geometry, Symmetry and Physics Seminar, Spring 2016 | - |
dc.title | Contraction algebra and invariants of singularities | - |
dc.title.alternative | Contraction algebra and invariants associated to three dimensional flopping contraction | - |
dc.type | Conference_Paper | - |
dc.identifier.email | Hua, Z: huazheng@hku.hk | - |
dc.identifier.authority | Hua, Z=rp01790 | - |
dc.identifier.hkuros | 269960 | - |