Annular Khovanov-Lee theory of braid closures and braided surfaces
Duration: 1 hour 4 mins
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About this item
| Description: |
Grigsby, E (Boston College)
Thursday 19th January 2017 - 14:30 to 15:30 |
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| Created: | 2017-02-07 12:32 |
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| Collection: | Homology theories in low dimensional topology |
| Publisher: | Isaac Newton Institute |
| Copyright: | Grigsby, E |
| Language: | eng (English) |
| Distribution: |
World
(downloadable)
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| Explicit content: | No |
| Aspect Ratio: | 16:9 |
| Screencast: | No |
| Bumper: | UCS Default |
| Trailer: | UCS Default |
| Abstract: | By endowing the annular Khovanov-Lee complex with the structure of a bifiltered complex, we define a family of annular Rasmussen invariants that gives information both about the positivity of braids viewed as mapping classes and the complexity of braided surfaces bounded by their closures (j. work with T. Licata and S. Wehrli).
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