Geometry and Topology Seminar 2019-2020: Difference between revisions
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|[http://www.math.wisc.edu/~oh/ Yong-Geun Oh] (UW Madison) | |[http://www.math.wisc.edu/~oh/ Yong-Geun Oh] (UW Madison) | ||
|[[#Yong-Geun Oh (UW Madison)| | |||
|''Counting embedded curves in Calabi-Yau threefolds and Gopakumar-Vafa invariants'' | |''Counting embedded curves in Calabi-Yau threefolds and Gopakumar-Vafa invariants'' | ||
|local | |local | ||
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|September 24 | |September 24 | ||
|[http://sites.google.com/site/polterov/home/ Leonid Polterovich] (Tel Aviv U and U of Chicago) | |[http://sites.google.com/site/polterov/home/ Leonid Polterovich] (Tel Aviv U and U of Chicago) | ||
|[[#Leonid Polterovich (Tel Aviv U and U of Chicago)| | |||
|''TBA'' | |''TBA'' | ||
|[http://www.math.wisc.edu/~oh/ Yong-Geun] | |[http://www.math.wisc.edu/~oh/ Yong-Geun] | ||
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|October 22 | |October 22 | ||
|[http://www.mathi.uni-heidelberg.de/~banagl/ Markus Banagl] (U. Heidelberg) | |[http://www.mathi.uni-heidelberg.de/~banagl/ Markus Banagl] (U. Heidelberg) | ||
|[[# Markus Banagl (U. Heidelberg)| | |||
|''TBA'' | |''TBA'' | ||
|[http://www.math.wisc.edu/~maxim/ Maxim] | |[http://www.math.wisc.edu/~maxim/ Maxim] | ||
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|November 5 | |November 5 | ||
|[http://www.math.psu.edu/tabachni/ Sergei Tabachnikov] (Penn State) | |[http://www.math.psu.edu/tabachni/ Sergei Tabachnikov] (Penn State) | ||
|[[#Sergei Tabachnikov] (Penn State)| | |||
|''TBA'' | |''TBA'' | ||
|[http://www.math.wisc.edu/~maribeff/ Gloria] | |[http://www.math.wisc.edu/~maribeff/ Gloria] | ||
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== Abstracts == | |||
===Yong-Geun Oh (UW Madison)=== | |||
''Counting embedded curves in Calabi-Yau threefolds and Gopakumar-Vafa invariants'' | |||
Gopakumar-Vafa BPS invariant is some integer counting invariant of the cohomology | |||
of D-brane moduli spaces in string theory. In relation to the Gromov-Witten theory, | |||
it is expected that the invariant would coincide with the `number' of embedded | |||
(pseudo)holomorphic curves (Gopakumar-Vafa conjecture). In this talk, we will explain the speaker's recent | |||
result that the latter integer invariants can be defined for a generic choice of | |||
compatible almost complex structures. We will also discuss the corresponding | |||
wall-crossing phenomena and some open questions towards a complete solution to | |||
the Gopakumar-Vafa conjecture. | |||
===Leonid Polterovich (Tel Aviv U and U of Chicago)=== | |||
''TBA'' | |||
===Markus Banagl (U. Heidelberg)=== | |||
''TBA'' | |||
===Sergei Tabachnikov (Penn State)=== | |||
''TBA'' | |||
|} | |} | ||
Revision as of 19:14, 6 September 2010
Fall 2010
The seminar will be held in room B901 of Van Vleck Hall on Fridays from 1:20pm - 2:10pm
Abstracts
Yong-Geun Oh (UW Madison)
Counting embedded curves in Calabi-Yau threefolds and Gopakumar-Vafa invariants
Gopakumar-Vafa BPS invariant is some integer counting invariant of the cohomology of D-brane moduli spaces in string theory. In relation to the Gromov-Witten theory, it is expected that the invariant would coincide with the `number' of embedded (pseudo)holomorphic curves (Gopakumar-Vafa conjecture). In this talk, we will explain the speaker's recent result that the latter integer invariants can be defined for a generic choice of compatible almost complex structures. We will also discuss the corresponding wall-crossing phenomena and some open questions towards a complete solution to the Gopakumar-Vafa conjecture.
Leonid Polterovich (Tel Aviv U and U of Chicago)
TBA
Markus Banagl (U. Heidelberg)
TBA
Sergei Tabachnikov (Penn State)
TBA
| date | speaker | title | host(s) | |
|---|---|---|---|---|
| September 10 | Yong-Geun Oh (UW Madison) | [[#Yong-Geun Oh (UW Madison)| | Counting embedded curves in Calabi-Yau threefolds and Gopakumar-Vafa invariants | local |
| September 24 | Leonid Polterovich (Tel Aviv U and U of Chicago) | [[#Leonid Polterovich (Tel Aviv U and U of Chicago)| | TBA | Yong-Geun |
| October 22 | Markus Banagl (U. Heidelberg) | [[# Markus Banagl (U. Heidelberg)| | TBA | Maxim |
| November 5 | Sergei Tabachnikov (Penn State) | [[#Sergei Tabachnikov] (Penn State)| | TBA | Gloria |