Louis Theran

Pure Maths Colloquium - Past Terms

This page lists the talks in the St Andrews Pure Maths Colloquium from 2018–2023, when I was organizing it. For a list of talks from before S1 2018, see this page.

Semester 2, 2022–2023

Jan 26 2023 Tony Nixon Lancaster Generic global rigidity for topological graphs
Feb 9 2023 Peter Cameron St A Regular polytopes of high rank for symmetric groups
Feb 16 2023 Marcelo Dias Edinburgh Instabilities in kirigami structures
Feb 23 2023 Kevin Buzzard Imperial Machine-assisted mathematics
Mar 9 2023 Ilya Chevyrev Edinburgh Stochastic quantisation of gauge theories
Mar 23 2023 Rob Silversmith Warwick Cross-ratios and perfect matchings
Mar 30 2023 Misha Rudnev Bristol On the sum-product conjecture, in particular sums and products of integers with few prime factors
Apr 6 2023 Jeffrey Giansiracusa Durham An E-infinity structure on the matroid Grassmannian
Apr 13 2023 Arend Bayer Edinburgh Derived categories, Wall-crossing and birational geometry

Semester 1, 2022–2023

Sep 22 2022 Peter Mayr UC Boulder The finite basis problem in general algebra
Sep 29 2022 Michael Barany Edinburgh Making the Modern Mathematician: Identity, politics, inclusion, exclusion, and the accidental rise of a "young man's game."
Oct 6 2022 Luke Jeffreys Bristol On the complement of the Lagrange spectrum in the Markov spectrum
Oct 13 2022 Scott Harper St A Derangements, invariable generation and simple groups
Oct 20 2022 Selim Ghazouani UCL Are physical systems really chaotic in the end?
Oct 27 2022 Leticia Pardo-Simón Manchester An invitation to transcendental dynamics
Nov 3 2022 Felix Röhrle Frankfurt The realizability problem in tropical geometry
Nov 10 2022 David Evans Imperial Invariant measures on omega-categorical structures
Nov 17 2022 Nellie Villazimar Swansea Spline functions on tetrahedral partitions
Nov 24 2022 David Ellis Bristol Hypercontractivity for some non-product spaces, and some applications
Dec 8 2022 Mark Holland Exeter On record events and extremes for dynamical systems

Semester 2, 2021–2022

Jan 27 2022 Sean Dewar RICAM Homothetic packings of centrally symmetric convex bodies
Feb 3 2022 Matthew Brookes St A Congruence relations for inverse semigroups
Feb 10 2022 Veronica Kelsey Manchester Maximal irredundant base size and relational complexity
Feb 17 2022 Natalia Jurga St A Cover times in dynamical systems
Mar 3 2022 Ashley Clayton St A Countable subdirect powers of algebras
Mar 17 2022 Sean Prendiville Lancaster Additive combinatorics, Diophantine problems and Fourier analysis
Mar 24 2022 Jay Taylor Manchester Representations of Finite Reductive Groups
Mar 31 2022 Paulo Varandas Porto A convex analysis approach to variational principles, entropy functions and equilibrium states

Semester 1, 2021–2022

Sep 23 2021 Finn Smith St A Computing finite semigroups
Sep 30 2021 Alan Logan Heriot-Watt Equalisers of free group homomorphisms
Oct 7 2021 Jemma Lorenat Pitzer An Okapi Hypothesis: non-Euclidean geometry and the professional expert in American mathematics
Oct 14 2021 Carl Frederick Nyberg-Brodda UEA One-relation monoids and virtually free groups
Oct 28 2021 Jing Tao Oklahoma Genericity of pseudo-Anosov mapping classes
Nov 4 2021 Tuomas Orponen Jyväskylä Some products of recent work on sum-products
Nov 11 2021 Rhiannon Dougall Durham Hyperbolic dynamics, growth, and group structure
Nov 18 2021 Alejandra Garrido Madrid A recipe for simple totally disconnected locally compact groups
Nov 25 2021 Ngoc Mai Tran UT Austin Recursive random partitions: probability, geometry, and machine learning

Semester 2, 2020–2021

Feb 04 2021 Deborah Kent St Andrews “The triumphant vindication of the American observations”? The Spanish eclipse expedition of 1870
Feb 11 2021 Alex Stewart St Andrews Evolutionary game theory as a tool for understanding online information ecosystems
Feb 18 2021 Kaie Kubjas Aalto Geometry of nonnegative rank
Feb 25 2021 Renzo Cavalieri Colorado State The moduli space of curves' journey to the tropics
Mar 04 2021 Wael Bahsoun Loughborough Statistical properties of chaotic dynamical systems via spectral methods
Mar 11 2021 Daniel Bernstein MIT / Fields Rigidity of plane frameworks with forced symmetry
Mar 18 2021 Andrea Lucchini Padova The non-F graph of a finite group (and the generating graph)
Apr 08 2021 Tom Archibald Simon Fraser Justifying abstraction: Examples from Integration Theory to 1940 with a focus on F. Riesz and O. Nikodym
Apr 15 2021 Tony Samuel Birmingham Expansions of real numbers
Apr 22 2021 Orit Raz HUJI Expanding polynomials and the discretized Elekes-Rónyai theorem

Semester 1, 2020–2021

Sep 24 2020 Yoav Len St Andrews Chip-firing games
Oct 1 2020 Yash Lodha EPFL Spaces of countable groups
Oct 09 2020 Elina Robeva UBC Orthogonal Tensor Decomposition
Oct 15 2020 Diane Maclagan Warwick Tropical geometry
Oct 29 2020 Liviana Palmisano Durham Attractors and their stability
Nov 05 2020 Isobel Webster St A A Lattice Isomorphism Theorem for Cluster Groups of Type A
Nov 12 2020 Rosemary Bailey and Peter Cameron St A Diagonal groups and Latin cubes
Nov 19 2020 Zeb Rocklin Georgia Tech The edge of the infinite: how topology generates flexes on the boundaries of periodic frames
Nov 26 2020 Milena Hering Edinburgh Algebraic varieties and their defining equations

Semester 2, 2019–2020

Feb 6 2020 Catherine Bruce Manchester Projections of random measures on products of ×m,×n-invariant sets and a random Furstenberg sumset conjecture
Feb 13 2020 H. Dugald MacPherson Leeds Classification for homogeneous relational structures
Feb 20 2020 Heather Harrington Oxford Algebraic Systems Biology
Feb 27 2020 Dimitra Kosta Glasgow Unboundedness of Markov complexity of monomial curves in A^n for n ≥ 4
Mar 5 2020 Istvan Kolossvary St Andrews Generic self-similar and self-conformal attractors on the line
Apr 16 2020 David Evans Imperial TBD

Semester 1, 2019–2020

Sept 26 2019 Pablo Shmerkin UTDT/CONICET Multiplying by 2 and by 3: old conjectures and new results
Oct 3 2019 Tuomas Sahlsten Manchester Random doughnuts
Oct 10 2019 Jamie Walton Glasgow Homotopical tools for analysing approximate symmetry
Oct 17 2019 Nayab Khalid St Andrews A combinatorial method to find an infinite geometric presentation for Thompson's group F
Oct 31 2019 Arnau Padrol Jussieu On Moser's shadow problem
Nov 7 2019 Scott Harper Bristol 3/2-Generated Groups
Nov 12 2019 Murray Elder UTS A new kind of automatic group
Nov 14 2019 Sophie Stevens Bristol Distinct distances in the plane
Nov 21 2019 Alexia Yavícoli St Andrews Arithmetic progressions and size
Dec 5 2019 Leonard Soicher QMUL Uniform semi-Latin squares

Semester 2, 2018–2019

Jan 31 2019 Wolfram Bentz Hull Regularity and the existential transversal property
Feb 7 2019 Tsunekazu Nishinaka U. Hyogo An application of graph theory to group algebras of non-Noetherian groups
Feb 14 2019 Alex Fink QMUL Matroids over rings
Feb 21 2019 Danny Otero Xavier Transforming Instruction in Undergraduate Mathematics via Primary Historical Sources
Feb 28 2019 Victoria Gould York Finitary properties for monoids
Mar 7 2019 Alfredo Hubard Marne-la-Vallée Bisecting and partitioning measures
Mar 14 2019 Simon Smith Lincoln Permutation groups and locally compact groups
Apr 4 2019 Norá Szakács York Algorithmic properties of tree-like inverse monoids
Apr 4 2019 Norá Szakács York Algorithmic properties of tree-like inverse monoids
Apr 11 2019 Rosanna Laking Verona Cosilting modules over cluster-tilted algebras
Apr 18 2019 Christopher Sogge Johns Hopkins Sharp local smoothing estimates for Fourier integral operators
Apr 25 2019 José Ferreira Alves Porto Entropy formula and continuity of entropy for piecewise expanding maps
Jun 4 2019 Richard Sharp Warwick Periodic orbit growth on covers for geodesic and Anosov flows
Jun 6 2019 Rachel Skipper Göttingen/ENS Lyon Finiteness properties of some groups in the extended Thompson family
Jun 18 2019 Nicolai Haydn USC Entry and Return Times Distributions in Dynamical Systems

Semester 1, 2018–2019

Sept 27 2018 Jonathan Hickman St Andrews On convergence of Fourier integrals
Oct 4 2018 Katherine Staden Oxford Erdős–Rothschild problems in graphs, groups and the integers
Oct 11 2018 Jim Belk St Andrews Rational actions of hyperbolic groups
Oct 18 2018 Ariel Rapaport Cambridge Dimension of planar self-affine sets and measures
Nov 1 2018 Justin Ward QMUL Distributed submodular maximization on massive datasets
Nov 8 2018 Justin Malestein Oklahoma Rigid structures with symmetry
Nov 15 2018 Demi Allen Manchester A general mass transference principle
Nov 22 2018 Vincent Pilaud Polytechnique From the associahedron to quotientopes, a journey in the combinatorics of lattice quotients of the weak order
Nov 29 2018 Michael Magee Durham Uniform spectral gap in number theory and beyond