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SEMINAR: Groups and Combinatorics Seminar, Counting surfaces: ribbon graphs, branched covers, and more

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Today's date is Sunday, February 28, 2021
Groups and Combinatorics Seminar, Counting surfaces: ribbon graphs, branched covers, and more Other events...
Norman Do (Monash University)

will speak on

Counting surfaces: ribbon graphs, branched covers, and more

at 3pm Friday 5 September in Weatherburn Lecture Theatre.

Abstract:

The enumeration of ribbon graphs (graphs embedded in surfaces) satisfies a so-called Tutte recursion, while the enumeration of branched covers (maps from a surface to a sphere) satisfies a so-called cut-and-join recursion. In fact, both are instances of the topological recursion, which emerged several years ago from the theory of matrix models. The topological recursion is now known to govern myriad problems from enumerative geometry, knot theory, theoretical physics, and more. We will give a very gentle introduction to these ideas, focusing on the combinatorial and algebraic aspects.
Speaker(s) Norman Do (Monash University)
Location Weatherburn Lecture Theatre G.40, The University of Western Australia
Contact Irene Pivotto <[email protected]>
Start Fri, 05 Sep 2014 15:00
End Fri, 05 Sep 2014 16:00
Submitted by Irene Pivotto <[email protected]>
Last Updated Mon, 13 Oct 2014 15:44
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