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Esmee te Winkel


Email: e.te-winkel at

Until October 2020 I was a PhD student at Warwick, supervised by Brian Bowditch and Saul Schleimer. My research interest lie in geometric group theory, hyperbolic geometry and low-dimensional topology. Specifically, I am thinking about the pants graph of the five holed sphere and the topology of its Gromov boundary.

I used to organise the GATEWAY seminar, but I've passed the baton to Marco Barberis and Solly Coles. Contact them if you would like to propose a talk or a speaker!


Summer 2020 Problem Solving Matters, student mentor
July 2019 Year 12 Maths Conference, teaching assistant
2018-2019 MA3F1 Introduction to Topology, teaching assistant
2017-2018 MA3F1 Introduction to Topology, teaching assistant
2016-2017 MA3H6 Algebraic Topology, teaching assistant


15 October 2020 "Knots in the curve graph", Geometry and Topology Online, Warwick
24 October 2019 "Gromov boundaries of curve graphs", Geometry Graduate Colloquium, Z├╝rich
30 August 2019 "SAMI Maths Camps", TMiP, Cambridge
1 May 2019 "A combinatorial approach to surface homeomorphisms", ShEAF, Sheffield
19 March 2019 "Surface homeomorphisms and pants decompositions", BRIJGES, Bristol
26 October 2018 "The pants graph", Geometry Tea, Cambridge
30 May 2018 "Coarse geometry of the pants graph", Junior Topology and Group Theory Seminar, Oxford
2 December 2017 "Low-dimensional manifolds and their geometry", Warwick-Imperial Autumn Meeting, Warwick
30 October 2017 "Mostow's rigidity theorem", GATEWAY Seminar, Warwick
17 May 2017 "Why surfaces are just glued pants", Postgraduate Seminar, Warwick


January 2020 Study Group Mathematics with Industry, Tilburg, The Netherlands
August 2019 Talking Maths in Public, Cambridge, UK
July 2019 Aspects of Geometric Group Theory, Paris, France
June 2019 Research Seminar "Student success from an international perspective", London, UK
May 2019 Research Seminar "Promoting STEM learning in young people", Sheffield, UK
February 2019 Geometric Analysis meets Geometric Topology, Heidelberg, Germany
September 2018 Dragon Applied Topology Conference, Swansea, UK
July 2018 Graphs, surfaces, and cube complexes, Warwick, UK
June 2018 Research School on 3-Manifolds and Geometric Group Theory, Luminy, France
April 2018 Geometry of Teichm├╝ller space and mapping class groups, Warwick, UK
March 2018 YGGT meeting VII, Les Diablerets, Switzerland
December 2017 Computation in geometric topology, Warwick, UK
October 2017 Ada Lovelace Day, Warwick, UK
September 2017 LMS-CMI Research School, Warwick, UK
June 2017 yGAGTA and GAGTA 2017, Bilbao, Spain
March 2017 YGGT meeting VI, Oxford, UK
June 2016 Beyond hyperbolicity, Cambridge, UK
March 2016 BeNeLux Mathematical Congress, Amsterdam, The Netherlands
February 2016 YGGT meeting V, Karlsruhe, Germany

Furthermore, I regularly attend the GGSE meetings.


I am a member of SAMI Charity and was teaching volunteer at their Maths Camps in Kenya (August 2018) and Ghana (August 2019). Talk to me if you want to know more!


I completed my master degree at the University of Bonn, where I wrote my thesis with Harry Baik on sticky and slippery laminations of the circle. Before that I did my bachelor degree at the University of Amsterdam. My bachelor project, on the topic of Sullivan's No Wandering Domain Theorem, was supervised by Han Peters.