|COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring.|
Dehn twists and free subgroups of the symplectic mapping class group
If you have a question about this talk, please contact Ivan Smith.
Given two Lagrangian spheres in an exact symplectic manifold, we present conditions under which the Dehn twists about them generate a free non-abelian subgroup of the symplectic mapping class group. This extends a result of Ishida for Riemann surfaces. The proof generalises the categorical version of Seidel’s long exact sequence to arbitrary powers of a fixed Dehn twist. Time allowing, we construct families of examples containing such spheres.
This talk is part of the Differential Geometry and Topology Seminar series.
This talk is included in these lists:
Note that ex-directory lists are not shown.
Other listsInformation Engineering Division seminar list Stories Behind the Stitches: Schoolgirl Samplers of the 18th and 19th Centuries Junior Category Theory Seminar
Other talksCGHR Research Group A Land of Conspiracy: Geopolitics and Imagination in Colonial North Africa Simple and multiple linear regression Is the All-There-Is all there is? Intimations of our place in the cosmos Leadership for Engineers - How to become an effective and valued leader Title 'TBA'