Group actions on spaces with a distinguished geodesic structure
1 hour 1 min,
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About this item
| Description: |
Lang, U (ETH Zürich)
Wednesday 11th January 2017 - 13:30 to 14:30 |
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| Created: | 2017-01-27 10:51 |
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| Collection: | Non-Positive Curvature Group Actions and Cohomology |
| Publisher: | Isaac Newton Institute |
| Copyright: | Lang, U |
| 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: | Co-authors: Giuliano Basso (ETH Zurich), Dominic Descombes (ETH Zurich), Benjamin Miesch (ETH Zurich)
A geodesic bicombing on a metric space selects for every pair of points a geodesic connecting them. The existence of a geodesic bicombing satisfying a suitable convexity condition may be viewed as a weak (but non-coarse) global notion of non-positive curvature that allows for non-unique geodesics. The talk will give a survey of recent results on group actions on spaces with such a structure. |
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| WebM * | 640x360 | 1.1 Mbits/sec | 507.58 MB | View | Download | |
| iPod Video | 480x270 | 523.68 kbits/sec | 233.97 MB | View | Download | |
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