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Geometry and Topology Seminar


  • Jing Tao
    Tame maps of surfaces of infinite type
    Tuesday 18th November 2025, 2:00 pm – 3:00 pm
    Fry Building, 2.04

  • Nolwenn Le Quellec
    Ushijima coordinates and Rigidity of the (simple) orthospectrum
    Tuesday 25th November 2025, 2:00 pm – 3:00 pm
    Fry Building, 2.04

  • TBA
    Tuesday 2nd December 2025, 2:00 pm – 3:00 pm
    Fry Building, 2.04

Past Seminars:

  • Rémi Coulon
    Power quotients of surface groups and mapping class groups
    Tuesday 11th November 2025

  • Philipp Bader
    Teichmüller curves via the Hurwitz-Hecke construction
    Tuesday 4th November 2025

  • Daniel Kasprowski *rescheduled*
    Homotopy classification of 4-manifolds
    Tuesday 28th October 2025

  • Damien Gaboriau
    Dynamics on the Space of Subgroups
    Tuesday 21st October 2025

  • Davide Spriano
    Curtains, walls and stable cylinders
    Tuesday 14th October 2025

  • Daniel Kasprowski *cancelled*
    Homotopy classification of 4-manifolds
    Tuesday 7th October 2025

  • Zachary Munro
    The cubical geometry of small-cancellation groups
    Tuesday 30th September 2025

  • Radhika Gupta
    Conformal dimension of the Bowditch boundary of certain Coxeter groups
    Tuesday 23rd September 2025

  • Alexandre Martin
    Cubulating Artin groups via cubical small cancellation
    Tuesday 6th May 2025

  • John Mackay
    Property FA for random l-gonal groups
    Tuesday 29th April 2025

  • Alan Logan
    Fixed subgroups of automorphisms of Generalised Baumslag-Solitar groups
    Tuesday 1st April 2025

  • David Aulicino
    Siegel-Veech Constants of Cyclic Covers of Generic Translation Surfaces
    Tuesday 25th March 2025

  • Panos Papasoglu
    Coarse Geometry and Graph Theory
    Tuesday 18th March 2025

  • Ana Lecuona
    Fibered ribbon pretzel knots - what we know and what we want to know
    Tuesday 11th March 2025

  • Eleftherios Kastis *note unusual room*
    Spanning disks in triangulated surfaces and rigidity on few locations
    Tuesday 4th March 2025

  • Sebastian Chenery
    Gyration Stability for Projective Planes
    Tuesday 25th February 2025

  • Ashot Minasyan
    Property Pnai and C*-simplicity of 1-relator groups
    Tuesday 18th February 2025

  • Mark Hagen
    Cutting up free-by-cyclic groups
    Tuesday 11th February 2025

  • Nicolas Vaskou
    Artin groups and the isomorphism problem
    Tuesday 4th February 2025

  • Stefanie Zbinden
    The contraction space and its applications
    Tuesday 28th January 2025

  • Stephen Cantrell
    Marked length spectrum rigidity from the perspective of geometric group theory
    Tuesday 21st January 2025

  • Shaked Bader
    Quasi-isometric embeddings of RAAGs
    Tuesday 3rd December 2024

  • Macarena Arenas
    Taut smoothings and shortest geodesics
    Tuesday 26th November 2024

  • Alan McLeay
    Small covers of Big surfaces
    Tuesday 19th November 2024

  • Diego Corro
    Singular Riemannian foliations as a notion of generalized symmetry
    Tuesday 12th November 2024

  • Sam Fisher *note unusual time*
    Free-by-(poly)cyclic groups
    Tuesday 5th November 2024

  • Tudur Lewis *note unusual time*
    Nielsen Realization for Rational 4-Manifolds
    Tuesday 29th October 2024

  • Giovanni Italiano
    The Dehn function of subgroups of direct products of free groups
    Tuesday 22nd October 2024

  • Giorgio Mangioni
    Rigidity properties of mapping class groups and their random quotients
    Tuesday 15th October 2024

  • Harry Petyt
    Coarse-geometric obstructions to cubulation
    Tuesday 8th October 2024

  • Joseph MacManus
    Coarse characterisations of planarity in Cayley graphs
    Tuesday 1st October 2024

  • Viveka Erlandsson
    Long random multi-curves
    Tuesday 24th September 2024

  • Sam Freedman
    Periodic Points on Veech Surfaces
    Tuesday 17th September 2024

  • Cornelia Drutu
    Understanding infinite groups via their actions on Banach spaces
    Tuesday 4th June 2024

  • Rohini Ramadas
    Thurston theory in complex dynamics: a tropical perspective
    Tuesday 21st May 2024

  • Matthew Tointon
    Scaling limits of vertex-transitive graphs of polynomial size or polynomial growth
    Tuesday 14th May 2024

  • Romain Tessera
    Balls in groups: volume, structure and growth
    Tuesday 7th May 2024

  • Laura Ciobanu
    Conjugacy growth in (some Artin) groups
    Tuesday 30th April 2024

  • David Hume
    A coarse geometric approach to graph layout problems
    Tuesday 23rd April 2024

  • Tommaso Cremaschi
    Big and small surfaces and Nielsen-Thurston Classification problems
    Tuesday 16th April 2024

  • Matthew Cordes
    Geometric approximate group theory
    Tuesday 19th March 2024

  • Alex Evetts
    Growth of subsets
    Tuesday 12th March 2024

  • Ido Grayevsky
    Sublinear rigidity of lattices in semisimple Lie groups
    Tuesday 5th March 2024

  • David Hume *cancelled*
    A coarse geometric approach to graph layout problems
    Tuesday 27th February 2024

  • Anna Pratoussevitch
    Ultra-parallel complex hyperbolic triangle groups
    Tuesday 20th February 2024

  • Samantha Pilgrim
    Asymptotic Invariants and Hurewicz-type Theorems
    Tuesday 13th February 2024

  • Matthew Tointon *cancelled*
    Scaling limits of vertex-transitive graphs of polynomial size or polynomial growth
    Tuesday 6th February 2024

  • Karen Vogtmann *note unusual time, joint with Algebra seminar*
    Finite groups of outer automorphisms of right-angled Artin groups
    Tuesday 30th January 2024

  • Arman Darbinyan
    A quasi-isometrically diverse class of bi-orderable solvable and residually finite groups via Taut Dehn spectra
    Tuesday 23rd January 2024

  • Robert Kropholler
    Folding-like techniques for CAT(0) cube complexes
    Tuesday 12th December 2023

  • Vladimir Vankov
    L-infinity cohomology of groups
    Tuesday 5th December 2023

  • Marco Linton
    The coherence of one-relator groups
    Tuesday 28th November 2023

  • Rachael Boyd
    Classifying spaces for 3-manifold diffeomorphisms
    Tuesday 21st November 2023

  • Peter Feller
    The Dehn twist coefficient and irrational rotation behaviour
    Tuesday 14th November 2023

  • Marc Lackenby
    Counting incompressible surfaces in hyperbolic 3-manifolds
    Tuesday 7th November 2023

  • John Mackay
    Asymptotic dimension for covers with controlled growth
    Tuesday 31st October 2023

  • Monika Kudlinksa
    Subgroup separability in 3-manifold and free-by-cyclic groups
    Tuesday 24th October 2023

  • William Cohen
    3-manifold groups acting acylindrically on trees
    Tuesday 17th October 2023

  • David Sheard
    Reflection and Nielsen equivalence in Coxeter groups
    Tuesday 10th October 2023

  • Mark Pengitore
    Residual finiteness growth functions of surface groups with respect to characteristic quotients
    Tuesday 3rd October 2023

  • Samantha Fairchild
    Pairs in discrete lattice surfaces with applications to Veech surfaces
    Tuesday 6th June 2023

  • Nóra Szakács
    Inverse semigroups as metric spaces, and their uniform Roe algebras
    Tuesday 2nd May 2023

  • Rachael Boyd *cancelled*
    Embedding spaces of split links
    Tuesday 25th April 2023

  • Gemma Crowe
    Conjugacy, languages and groups
    Tuesday 18th April 2023

  • Richard Webb
    A new approach for homeomorphisms of surfaces
    Tuesday 14th March 2023

  • Adele Jackson
    Triangulations of Seifert fibered spaces
    Tuesday 7th March 2023

  • David Hume
    Thick topological embeddings of graphs into symmetric spaces
    Tuesday 28th February 2023

  • George Kontogeorgiou
    Discrete group actions on 3-manifolds and embeddable Cayley complexes
    Tuesday 14th February 2023

  • Laura Monk
    Counting non-simple geodesics on random hyperbolic surfaces
    Tuesday 7th February 2023

  • Davide Spriano
    Hyperbolic models for CAT(0) spaces
    Tuesday 31st January 2023

  • Michael Magee
    The maximal spectral gap of a hyperbolic surface
    Tuesday 24th January 2023

  • Constantin Vernicos
    Flag Approximability of convex bodies and volume entropy of Hilbert geometries
    Tuesday 13th December 2022

  • Martin de Borbon
    Polyhedral Kahler cone metrics on Cn
    Tuesday 6th December 2022

  • Mingkun Liu
    Random multi-geodesics on hyperbolic surfaces of large genus
    Tuesday 29th November 2022

  • Sean Dewar
    Homothetic packings of centrally symmetric convex bodies
    Tuesday 22nd November 2022

  • Bradley Zykoski
    A polytopal decomposition of strata of translation surfaces
    Wednesday 16th November 2022

  • Robert Suzzi Valli
    Combinatorial Growth of Reciprocal Geodesics in the Modular Group
    Tuesday 15th November 2022

  • Bin Sun
    L2-Betti numbers of fiber bundles
    Tuesday 8th November 2022

  • Jacob Russell
    Purely pseudo-Anosov subgroups of fibered 3-manifold groups
    Tuesday 1st November 2022

  • Macarena Arenas
    A cubical Rips construction
    Tuesday 25th October 2022

  • Gianluca Faraco
    Period realisation of meromorphic differentials
    Tuesday 18th October 2022

  • Patrick Nairne
    Obstructions to embeddings between trees
    Tuesday 11th October 2022

  • Mark Hagen
    Separability (and mapping class groups)
    Tuesday 4th October 2022

  • Anthony Sanchez *note the unusual day and time*
    Kontsevich-Zorich monodromy groups of translation covers of some platonic solids
    Wednesday 28th September 2022

  • Marie Trin
    Thurston’s compactification via geodesic currents: the case of non-compact finite area surfaces
    Tuesday 13th September 2022

  • John Parker
    Complex Hyperbolic Lattices
    Tuesday 31st May 2022

  • Chandrika Sadanand
    Heegaard splittings and square complexes
    Tuesday 24th May 2022

  • Rhiannon Dougall
    Counting Limit Theorems for Anosov Representations
    Tuesday 24th May 2022

  • Lars Louder
    Negative immersions and coherence of (most) one-relator groups
    Tuesday 17th May 2022

  • Anna Parlak
    Pseudo-Anosov flows and twisted Alexander polynomials
    Tuesday 10th May 2022

  • Jone Lopez de Gamiz
    Limit groups over coherent RAAGs and their subgroups.
    Tuesday 3rd May 2022

  • Olga Paris-Romaskevich
    Novikov’s problem and tiling billiards
    Tuesday 29th March 2022

  • Jenya Sapir
    A projection from geodesic currents to Teichmuller space
    Tuesday 22nd March 2022

  • Sam Hughes
    Hierarchical hyperbolicity versus biautomaticity
    Tuesday 15th March 2022

  • Mehdi Yazdi
    Upper bound for distance in the pants graph
    Tuesday 8th March 2022

  • Anja Randecker
    Saddle connection complex: coarse and fine
    Tuesday 1st March 2022

  • Dmitri Panov
    Moduli of spherical tori with one conical point
    Tuesday 22nd February 2022

  • Feng Zhu
    Equidistribution and counting in Hilbert geometry
    Tuesday 15th February 2022

  • Sam Corson
    A space which is slightly connected and very thick
    Tuesday 8th February 2022

  • Lei Chen
    Actions of Homeo and Diffeo groups on manifolds
    Tuesday 1st February 2022

  • Thomas Haettel
    Group actions on Helly graphs and injective metric spaces
    Tuesday 14th December 2021

  • Tarik Aougab
    Dilatation for random point-pushing pseudo-Anosovs
    Tuesday 7th December 2021

  • Marissa Loving
    End-periodic homeomorphisms and volumes of mapping tori
    Tuesday 30th November 2021

  • Daniel Berlyne
    Non-positive curvature in graph braid groups
    Tuesday 23rd November 2021

  • Yvon Verberne
    Automorphisms of the fine curve graph
    Tuesday 16th November 2021

  • Radhika Gupta
    Relating polynomial invariants of free-by-cyclic groups
    Tuesday 9th November 2021

  • Emily Shinkle
    Finite Rigid Sets for Combinatorial Complexes Associated to Surfaces
    Tuesday 2nd November 2021

  • Abdul Zalloum
    Hyperplanes all over the place
    Tuesday 26th October 2021

  • Arnaud Maret
    Remarkable surface group representations in genus zero
    Tuesday 19th October 2021

  • Aitor Azemar
    A qualitative description of the horoboundary of the Teichmüller metric
    Tuesday 12th October 2021

  • Fanny Kassel
    Convex cocompactness and Coxeter groups
    Tuesday 25th May 2021

  • Alice Kerr
    Quasi-trees and product set growth
    Tuesday 18th May 2021

  • Vincent Delecroix
    Random multicurves in high genera
    Tuesday 11th May 2021

  • Anton Zorich
    Count of simple closed geodesics on Riemann surfaces
    Tuesday 4th May 2021

  • Leonid Monin
    Hyperelliptic curves with many automorphisms and triangular billiards
    Tuesday 27th April 2021

  • Michelle Chu
    Prescribed virtual torsion in the homology of 3-manifolds
    Tuesday 20th April 2021

  • Johan Taflin
    Attractors in holomorphic dynamics
    Tuesday 13th April 2021

  • Carolyn Abbott
    Random walks and quasiconvexity in acylindrically hyperbolic groups
    Tuesday 23rd March 2021

  • Chandrika Sadanand
    Hyperbolic surfaces with cone points and polygonal billiards
    Tuesday 16th March 2021

  • Hugo Parlier
    Curves, surfaces and intersection
    Tuesday 9th March 2021

  • Arielle Leitner
    Deformations of Generalized Cusps on Convex Projective Manifolds
    Tuesday 2nd March 2021

  • Rylee Lyman
    Folding-like Techniques for CAT(0) Cube Complexes
    Tuesday 23rd February 2021

  • Didac Martinez Granado
    Geodesic currents and the smoothing property
    Monday 15th February 2021

  • Rose Morris-Wright
    A Deligne Complex for Artin Monoids (Based on joint work with Rachael Boyd and Ruth Charney)
    Tuesday 9th February 2021

  • Dusa McDuff
    The symplectic embedding problem
    Tuesday 26th January 2021

  • Marissa Miller
    Geometry of the genus two handlebody group
    Tuesday 19th January 2021

  • Yulan Qing
    Sublinearly Morse Boundary of Groups
    Tuesday 12th January 2021

  • Nima Hoda
    Strongly shortcut spaces
    Tuesday 15th December 2020

  • Nick Wilkins
    A construction of Steenrod squares and their quantum counterparts
    Tuesday 8th December 2020

  • Joseph Wells
    Complex hyperbolic hybrids
    Tuesday 1st December 2020

  • Lorenzo Ruffoni *note unusual day and time*
    Projective structures, representations, and ODEs on surfaces.
    Monday 23rd November 2020

  • David Hume *note unusual day and time*
    Geometry of acylindrically hyperbolic groups
    Monday 16th November 2020

  • Jean-Pierre Mutanguha
    Finding relative immersions of free groups
    Tuesday 10th November 2020

  • Jing Tao
    Polygons, Horogons, and the Nielsen-Thurston Classification Theorem
    Tuesday 3rd November 2020

  • Aaron Fenyes
    Hyperbolic surfaces as singular flat surfaces
    Tuesday 27th October 2020

  • Luke Jeffreys
    The statistical hyperbolicity of Teichmüller space
    Tuesday 20th October 2020

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