Difference between revisions of "Geometry and Topology Seminar"
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|September 10 | |September 10 | ||
|[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] | ||
|- | |- | ||
|- | |- | ||
+ | == 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 13:14, 6 September 2010
Contents
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 |