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Durham University

Research & business

Research lectures, seminars and events

The events listed in this area are research seminars, workshops and lectures hosted by Durham University departments and research institutes. If you are not a member of the University, but  wish to enquire about attending one of the events please contact the organiser or host department.


 

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Events for 4 June 2020

Bram Petri: The minimal diameter of a hyperbolic surface

1:00pm, Online. The talk will be broadcast via Zoom.

For every genus g larger than 1, there exists a 6g-6 dimensional deformation space of hyperbolic metrics (i.e. of constant curvature -1) on a closed orientable surface of genus g. In this space, one can find surfaces of arbitrarily large diameter. On the other hand, there is a lower bound on the diameter of a hyperbolic surface of genus g. In this talk I will speak about the asymptotic behavior of this bound as g tends to infinity. This is joint work with Thomas Budzinski and Nicolas Curien.

Contact mark.a.powell@durham.ac.uk, andrew.lobb@durham.ac.uk, wilhelm.klingenberg@durham.ac.uk, fernando.galaz-garcia@durham.ac.uk for more information about this event.