COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring. |

University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Commensurability of groups quasi-isometric to RAAG's

## Commensurability of groups quasi-isometric to RAAG'sAdd to your list(s) Download to your calendar using vCal - Jingyin Huang (McGill University)
- Wednesday 11 January 2017, 09:00-10:00
- Seminar Room 1, Newton Institute.
If you have a question about this talk, please contact info@newton.ac.uk. NPCW01 - Non-positive curvature in action It is well-known that a finitely generated group quasi-isometric to a free group is commensurable to a free group. We seek higher-dimensional generalization of this fact in the class of right-angled Artin groups (RAAG). Let G be a RAAG with finite outer automorphism group. Suppose in addition that the defining graph of G is star-rigid and has no induced 4-cycle. Then we show every finitely generated group quasi-isometric to G is commensurable to G. However, if the defining graph of G contains an induced 4-cycle, then there always exists a group quasi-isometric to G, but not commensurable to G. This talk is part of the Isaac Newton Institute Seminar Series series. ## This talk is included in these lists:- All CMS events
- Featured lists
- INI info aggregator
- Isaac Newton Institute Seminar Series
- School of Physical Sciences
- Seminar Room 1, Newton Institute
Note that ex-directory lists are not shown. |
## Other listsCambridge University German Society Sidgwick Site Equalities Improvement Network Cambridge University Franco-British Student Alliance## Other talksBiomarkers and novel tools for early detection; general principles and specific examples Finding meaning in English writing The Knotty Maths of Medicine The genetic framework of germline stem cell development CANCELLED Ñande reko: alterity and (non-)participatory research with guaraní women in Bolivia Building intuition about coherence |