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Past Seminars:
- Alexey Pokrovskiy
Group-harmonious labellings of trees
Tuesday 12th May 2026 - Alp Müyesser
Graham's rearrangement conjecture
Tuesday 21st April 2026 - Andrew Treglown
Monochromatic triangle tilings in dense graphs
Tuesday 14th April 2026 - Sean Dewar
Hadamard products and Bergman fans
Tuesday 7th April 2026 - Emma Smith
Distinct Difference Configurations in Groups
Tuesday 17th March 2026 - Lukas Michel
Cycle-factors of regular graphs via entropy
Tuesday 3rd March 2026 - Peleg Michaeli
Extremal and probabilistic aspects of graph rigidity
Tuesday 24th February 2026 - Maura Paterson
The Spectrum of the Non-Hitting Index of Polynomials over Finite Fields
Tuesday 17th February 2026 - Max Koelbl
Symmetric edge polytopes and Ehrhart polynomial roots
Tuesday 10th February 2026 - Ryan Martin
Counting cycles in planar graphs
Tuesday 3rd February 2026 - Agelos Georgakopoulos
On better-quasi-ordering under graph minors
Tuesday 27th January 2026 - Joseph Hyde
Sharp asymmetric vertex Ramsey properties of random hypergraphs
Tuesday 20th January 2026 - Natasha Morrison
Spanning trees in pseudorandom graphs via sorting networks
Tuesday 13th January 2026 - Samuel Mansfield
Additive growth between linearly independent analytic functions
Tuesday 16th December 2025 - Katherine Staden
The semi-inducibility problem
Tuesday 9th December 2025 - Ella Williams
Embedding trees using minimum and maximum degree conditions
Tuesday 25th November 2025 - Debsoumya Chakraborti
Approximate packing of independent transversals in locally sparse graphs
Tuesday 18th November 2025 - Noah Kravitz
Lonely runners and their spectra.
Tuesday 11th November 2025 - Coen del Valle
The binary actions of sporadic groups
Tuesday 4th November 2025 - Abhiram Natarajan
Discrete Geometry with Pfaffian Sets - Tools and Applications
Tuesday 28th October 2025 - Matthew Bowen
Monochromatic sums, products, and exponents in 2-colorings of the naturals.
Tuesday 21st October 2025 - Jie Ma
An exponential improvement for the Ramsey lower bounds
Tuesday 14th October 2025 - Stelios Stylianou
Four-player equilibria on the discrete hypercube.
Tuesday 7th October 2025 - Gareth Tracey
How many subgroups are there in a finite group?
Tuesday 30th September 2025 - Oliver Clarke
Equivariant Ehrhart Theory of Hypersimplices
Tuesday 23rd September 2025 - Jonathan Jedwab
Constructions of difference sets in groups of order $4^d$
Tuesday 9th September 2025 - James Cruickshank
Simplicial Complexes and Rigidity
Tuesday 27th May 2025 - Pavel Turek
The wreath conjecture: intervals in Dyck paths, and the wreath matrix
Tuesday 20th May 2025 - Daniel Green Tripp
Counting realisations of frameworks using tropical geometry.
Tuesday 6th May 2025 - John Haslegrave
Sharp thresholds for flexible realisations in random graphs
Tuesday 8th April 2025 - Freddie Illingworth
The Zarankiewicz problem in tripartite graphs
Tuesday 1st April 2025 - Eoin Long
Distinct degrees and homogeneous sets
Tuesday 25th March 2025 - Sean Eberhard
Normal covering numbers for groups and connections to additive combinatorics
Tuesday 18th March 2025 - Thomas Bloom
Control in additive combinatorics and its applications
Tuesday 11th March 2025 - Antonio Girao
Monochromatic odd cycles in edge-coloured complete graphs
Tuesday 4th March 2025 - Akshat Mudgal
On commuting pairs of matrices
Tuesday 25th February 2025 - Jane Tan
A 200000-colour theorem
Tuesday 18th February 2025 - Maksim Zhukovskii
Thresholds for regular subgraphs of random graphs
Tuesday 11th February 2025 - Paul Hametner
The neighbourhood conjecture for Maker-Breaker games
Tuesday 4th February 2025 - Marina Anagnostopoulou-Merkouri
Permutation groups, partition lattices and block structures.
Tuesday 4th February 2025 - Ben Smith
k-fold Circuits in Matroids
Tuesday 28th January 2025 - Bernd Schulze
Structural rigidity analysis via group theory and homology
Tuesday 10th December 2024 - Laura Johnson
Various constructions of AMD codes
Wednesday 27th November 2024 - Mehdi Makhul
On the orchard type problems in higher dimensions
Tuesday 26th November 2024 - Gal Kronenberg
Reconstructing shredded matrices
Tuesday 19th November 2024 - Julian Sahasrabudhe
On the multi-colour Ramsey numbers
Tuesday 12th November 2024 - Iain Moffatt
Graphs in surfaces, their one-face subgraphs, and the critical group
Tuesday 5th November 2024 - David Guo
Residually finite groups with uniformly almost flat quotients
Tuesday 29th October 2024 - Hou Tin Chau
Iterated shadows in the hypercube
Tuesday 22nd October 2024 - Candy Bowtell
Tiling thresholds in 3-uniform hypergraphs
Tuesday 15th October 2024 - Sean Prendiville
An inverse theorem for the Gowers U^3 norm relative to quadratic level sets
Tuesday 1st October 2024 - Natalie Behague
Common pairs of graphs
Tuesday 24th September 2024 - Adva Mond
Maker-Breaker percolation games on a random board
Tuesday 17th September 2024 - Marius Tiba
Sharp stability for the Brunn-Minkowski inequality for arbitrary sets
Tuesday 21st May 2024 - Victor Souza
On the number of monochromatic solutions to multiplicative equations
Tuesday 14th May 2024 - Konrad Swanepoel
Matchstick graphs in the plane and on the sphere
Tuesday 7th May 2024 - Martin Winter
Kalai's 3^d conjecture for coordinate-symmetric polytopes
Tuesday 30th April 2024 - Alison La Porta
The infinitesimal rigidity of symmetric bar-joint frameworks
Tuesday 23rd April 2024 - Matthew Jenssen
A new lower bound for sphere packing
Tuesday 16th April 2024 - Matt Tointon
Spread-out percolation on transitive graphs of polynomial growth
Tuesday 26th March 2024 - Sam Mansfield
Sums, Products, Convexity, Squeezing, Expansion, Generalizations.
Tuesday 19th March 2024 - Joanna Lada
Long running times for hypergraph bootstrap percolation
Tuesday 12th March 2024 - Tom Johnston
Game connectivity and adaptive dynamics
Tuesday 5th March 2024 - Tony Nixon
On the d-dimensional rigidity problem
Tuesday 27th February 2024 - Maria-Romina Ivan
Recent developments in poset saturation - general bounds, and the diamond
Tuesday 20th February 2024 - Hou Tin Chau
Maximum degree of induced subgraphs of the Kneser graph
Tuesday 13th February 2024 - Joshua Erde
Percolation in high-dimensional graphs
Tuesday 6th February 2024 - Natalie Behague
Counting copies with containers
Tuesday 30th January 2024 - Csongor Beke
On the generalised Turán problem for odd cycles
Wednesday 6th December 2023 - John Mackay
Group actions on L^1 spaces
Tuesday 5th December 2023 - Nora Frankl
Helly numbers of exponential lattices
Tuesday 28th November 2023 - Marcelo Campos
An exponential improvement for diagonal Ramsey
Tuesday 21st November 2023 - Stelios Stylianou
A two-player voting game in Euclidean space
Tuesday 14th November 2023 - Leo Versteegen
Linear graph codes
Tuesday 7th November 2023 - Cédric Pilatte
A combinatorics problem of Erdős solved with function field number theory
Tuesday 31st October 2023 - Barnabas Janzer
Rotations inside convex Kakeya sets
Tuesday 24th October 2023 - Jesse Campion Loth
Enumerating graph embeddings
Friday 20th October 2023 - Peter van Hintum
Sharp stability for the Brunn-Minkowski inequality for arbitrary sets
Tuesday 17th October 2023 - Laurentiu Ioan Ploscaru
A bipartite version of the Erdős–McKay conjecture
Tuesday 10th October 2023 - Antonio Girao
On induced C_4-free graphs with high average degree
Tuesday 3rd October 2023 - Borys Kuca
Recent developments in the polynomial Szemeredi theorem
Tuesday 4th July 2023 - Mate Matolcsi
A solution to a conjecture of Erdos on planar sets avoiding unit distances
Wednesday 28th June 2023 - Ehud Friedgut
The most complicated proof ever of Mantel’s theorem, and other applications of representation theory of the symmetric group
Tuesday 6th June 2023 - Thomas Karam
The structure of the set of minimal-length slice rank decompositions of a tensor over a finite field.
Tuesday 30th May 2023 - Yifan Jing
Measure doubling for small sets in SO(3,R)
Tuesday 23rd May 2023 - Tom Bloom
Tuesday 16th May 2023 - Joel Moreira
Infinite sumsets in sets of positive density
Tuesday 9th May 2023 - Sean Dewar
A beginners guide to combinatorial rigidity and flexibility in the plane
Tuesday 2nd May 2023 - Robert Johnson
Partial shuffles by lazy swaps
Tuesday 21st March 2023 - Daniel Altman
On an arithmetic Sidorenko conjecture, and a question of Alon
Tuesday 14th March 2023 - Pierre-Yves Bienvenu
Metric decomposability theorems on sets of integers
Tuesday 7th March 2023 - Ilya Shkredov
On Korobov's bound concerning Zaremba's conjecture.
Thursday 2nd March 2023 - Misha Rudnev
Wednesday 22nd February 2023 - Michael Savery
Invertibility of digraphs and tournaments
Wednesday 15th February 2023 - Matthew Jenssen
The singularity probability of a random symmetric matrix
Tuesday 7th February 2023 - Hamed Mousavi
On a conjecture of Graham concerning the p-divisibility of central binomial coefficients
Tuesday 24th January 2023 - Shoham Letzter
Ascending subgraph decomposition
Tuesday 6th December 2022 - John Haslegrave
Ramsey numbers of cycles versus general graphs
Tuesday 29th November 2022 - Gal Kronenberg
Tuesday 22nd November 2022 - Katherine Staden
Ringel's conjecture on tree-packing
Tuesday 15th November 2022 - Belinda Wickes
Separating Path Systems for the Complete Graph
Tuesday 8th November 2022 - Siani Smith
Acyclic, Star and Injective Colouring: Complexity for H-free Graphs
Wednesday 2nd November 2022 - Alexander Holroyd
Finitely Dependent Colouring
Tuesday 1st November 2022 - Freddie Illingworth
Defective colouring of hypergraphs
Tuesday 25th October 2022 - Richard Montgomery
On the Ryser-Brualdi-Stein conjecture
Wednesday 19th October 2022 - Manjil Saikia
Alternating Sign Matrices and Plane Partitions
Tuesday 11th October 2022 - Maria Romina-Ivan
Constructible graphs and the game of cops and robbers
Tuesday 4th October 2022 - Sam Mansfield
A structural theorem for sets with few triangles
Tuesday 27th September 2022 - Shai Evra
Locally testable codes with constant rate, constant distance, and constant locality.
Tuesday 20th September 2022 - Panagiotis Spanos
Spread out percolation in 2-step nilpotent groups
Tuesday 26th April 2022 - Peter Bradshaw
Convex Functions and Additive Structure
Tuesday 29th March 2022 - Jakub Konieczny
Finitely-valued generalised polynomials
Tuesday 22nd March 2022 - Akshat Mudgal
Finding large additive and multiplicative Sidon sets in sets of integers.
Tuesday 15th March 2022 - Eoin Long
Distinct degrees and homogenous sets
Tuesday 8th March 2022 - Jonathan Passant
Configurations and Erdős style distance problems
Tuesday 1st March 2022 - Freddie Manners
Iterated Cauchy-Schwarz arguments and true complexity
Tuesday 22nd February 2022 - Shachar Lovett
The monomial structure of boolean functions
Tuesday 15th February 2022 - Sean Eberhard
Tuesday 8th February 2022 - Sam Chow
Bohr sets in diophantine approximation
Tuesday 1st February 2022 - Imre Leader
Euclidean Ramsey Theory
Wednesday 15th December 2021 - Aled Walker
Extremal problems for GCDs
Wednesday 1st December 2021 - Bodan Arsovski
The p-adic Kakeya conjecture
Tuesday 23rd November 2021 - Vadim Zverovich
Prevalence of Braess' Paradox?
Tuesday 16th November 2021 - Scott Harper
Symmetry breaking: base size and distinguishing number of graphs and groups
Tuesday 9th November 2021 - Natalie Behague
Subgraph Games in the Semi-random Graph Process
Tuesday 2nd November 2021 - Asaf Ferber
Odd subgraphs are odd
Tuesday 26th October 2021 - Tom Johnston
Reconstructing trees from small cards
Tuesday 26th October 2021 - Michael Simkin
The number of n-queens configurations
Tuesday 19th October 2021 - Janos Nagy
The Alon-Jaeger-Tarsi conjecture via group ring identities
Tuesday 12th October 2021 - Jonathan Chapman
Partition and density regularity for diagonal systems of equations
Tuesday 5th October 2021 - Sophie Stevens
Sums, Products, Additive Combinatorics, Etc.
Tuesday 11th May 2021 - Natalie Behague
Synchronizing Times for k-sets in Automata
Tuesday 20th April 2021 - Benny Sudakov
Three problems on 3-chromatic intersecting hypergraphs
Tuesday 30th March 2021 - Bill Jackson
Maximal Matroids in Weak Order Posets
Tuesday 23rd March 2021 - Ander Holroyd
Monday 22nd March 2021 - Ehud Friedgut
A quest for Hyper Regular Graphs
Tuesday 16th March 2021 - Chun-Hung Liu
Asymptotic dimension of minor-closed families, and beyond.
Wednesday 24th February 2021 - Ben Barber
Sums of roots of unity
Tuesday 16th February 2021 - Peter Bradshaw
An Incidence Result for Well-Spaced Atoms.
Tuesday 9th February 2021 - Shai Evra
High dimensional expanders
Tuesday 2nd February 2021 - Péter Pál Pach
Avoiding arithmetic progressions or right angles
Tuesday 26th January 2021 - Yuansi Chen
Recent progress on the KLS conjecture and Eldan’s stochastic localization scheme
Tuesday 19th January 2021 - Akshat Mudgal
Difference sets in higher dimensions
Tuesday 15th December 2020 - Candida Bowtell
Matchings in k-partite k-graphs
Tuesday 8th December 2020 - Asaf Ferber
Lower bounds for multicoloured Ramsey numbers
Tuesday 1st December 2020 - Istvan Tomon
The extremal number of surfaces
Tuesday 1st December 2020 - George Shakan
An analytic approach to Sumsets
Tuesday 24th November 2020 - William Raynaud
Families of sets that are pairwise close
Tuesday 17th November 2020 - Noam Lifshitz
Analysis of global sets
Tuesday 10th November 2020 - Hassan Izanloo
The volume and the Ehrhart polynomial of the alternating sign matrix polytope
Tuesday 3rd November 2020 - David Hume
Coarse graph theory and applications to infinite groups
Tuesday 27th October 2020 - Alexey Pokrovskiy
Rota's Basis Conjecture holds asymptotically
Tuesday 20th October 2020 - Angelica Pachon
On preferential attachment models and continuous time Markov processes
Tuesday 13th October 2020 - Olof Sisask
Breaking the logarithmic barrier in Roth's theorem
Tuesday 6th October 2020 - Matthew Tointon
Phase transition for percolation on finite vertex-transitive graphs
Tuesday 29th September 2020 - Hassan Izanloo
[Postponed until further notice due to COVID-19 outbreak.] The volume and the Ehrhart polynomial of the alternating sign matrix polytope
Tuesday 5th May 2020 - Angelica Pachon
[Postponed until further notice due to COVID-19 outbreak.]
Tuesday 28th April 2020 - James Aaronson
CANCELLED
Tuesday 21st April 2020 - George Shakan
[POSTPONED UNTIL FURTHER NOTICE] (An analytic approach to Sumsets)
Tuesday 24th March 2020 - Candida Bowtell
[POSTPONED UNTIL FURTHER NOTICE] (Matchings in $k$-partite $k$-graphs)
Tuesday 17th March 2020 - Ehud Friedgut
Five and a half proofs of one theorem
Tuesday 10th March 2020 - Julian Sahasrabudhe
On Combinatorial discrepancy and an old problem of J.E. Littlewood
Tuesday 3rd March 2020 - Imre Leader
Decomposing the Complete r-Graph
Friday 28th February 2020 - Audie Warren
Affine group energy
Tuesday 25th February 2020 - Carla Groenland
Reconstruction from a partial deck of cards
Tuesday 18th February 2020 - Sarah Peluse
Bounds in the polynomial Szemer\'edi theorem
Tuesday 11th February 2020 - Eoin Long
Distinct degrees in induced subgraphs
Tuesday 4th February 2020 - Steven Noble
Counting delta-matroids
Tuesday 28th January 2020 - Laura Eslava
Branching processes with merges and locality of hypercube’s critical percolation
Tuesday 21st January 2020 - Nick Gill
Some interesting statistics concerning finite primitive permutation groups
Tuesday 17th December 2019 - Ben Barber
Stable isoperimetry in lattice-like graphs
Tuesday 10th December 2019 - Nóra Frankl
On the number of discrete chains in the plane
Tuesday 3rd December 2019 - David Ellis
Families of permutations with a forbidden intersection
Tuesday 26th November 2019 - Alex Fink
Tutte characters for combinatorial coalgebras
Tuesday 19th November 2019 - Iain Moffatt
From graph duals to matrix pivots: a tour through delta-matorids
Tuesday 12th November 2019 - Nick Brettell
On excluded-minor characterisations of representable matroids
Tuesday 5th November 2019 - Ben Smith
Staircases and tropical polyhedra
Tuesday 29th October 2019 - Thomas Johnston
Lipschitz bijections between boolean functions
Tuesday 22nd October 2019 - Borys Kuca
Polynomial Szemeredi theorem
Tuesday 15th October 2019 - Maura Paterson
Authentication codes and related structures
Tuesday 8th October 2019 - Maryam Sharifzadeh
Asymptotic Structure for the Clique Density Theorem
Tuesday 1st October 2019 - Anthony Nixon
Global rigidity of linearly constrained frameworks
Tuesday 24th September 2019 - Thomas Bloom
Tuesday 18th June 2019 - Thomas Bloom
Thursday 13th June 2019 - Robert Fraser
Large Sets Avoiding Polynomial Configurations
Tuesday 30th April 2019 - Alberto Espuny Díaz
Resilient degree sequences with respect to Hamiltonicity in random graphs
Tuesday 2nd April 2019 - Rachel Kirsch
Many cliques with no large stars
Tuesday 26th March 2019 - Matthew Coulson
Rainbow Hamilton Cycles in Dirac Graphs
Tuesday 19th March 2019 - Akos Magyar
Geometric Ramsey theory on the integer lattice
Tuesday 12th March 2019 - William Raynaud
Smallest cyclically covering subspaces of F_q^n
Tuesday 5th March 2019 - Natalie Behague
Semi-perfect 1-Factorizations of the Hypercube
Tuesday 26th February 2019 - Mykhaylo Tyomkyn
The Brown-Erdős-Sós conjecture in groups
Tuesday 19th February 2019 - Johannes Carmesin
Embedding simply connected 2-complexes in 3-space
Tuesday 5th February 2019 - Yani Pehova
Decomposing graphs into edges and triangles
Tuesday 29th January 2019 - Katherine Staden
The bandwidth theorem for locally dense graphs
Tuesday 18th December 2018 - Matthew Aldridge
Group testing in the linear regime
Tuesday 11th December 2018 - David Conlon
Tuesday 27th November 2018 - Aled Walker
Kneser's theorem and primes in arithmetic progressions, or 'A little combinatorics goes a long way'
Tuesday 20th November 2018 - Viktor Zamaraev
On forbidden induced subgraphs for unit disk graphs
Tuesday 6th November 2018 - Kevin Grace
Templates for Representable Matroids
Tuesday 9th October 2018 - Christian Konrad
Streaming Algorithms for Matchings
Tuesday 2nd October 2018 - Joshua Erde
Bounding the cop number of a graph by its genus
Tuesday 18th September 2018 - George Shakan
On new sum-product inequalities for small sets
Tuesday 4th September 2018 - Taísa Martins
Step Sidorenko property and non-norming edge-transitive graphs
Tuesday 29th May 2018 - Andrey Kupavskii
The Erdos Matching Conjecture and related questions.
Tuesday 1st May 2018 - Konrad Swanepoel
Ordinary hyperplanes and space curves
Tuesday 17th April 2018 - Gabriel Conant
VC-dimension, pseudofinite groups, and arithmetic regularity
Friday 13th April 2018 - Andrew Treglown
Some results on sums in the integers
Tuesday 27th March 2018 - Michelle Delcourt
On the List Coloring Version of Reed's Conjecture
Friday 9th March 2018 - Ilya Shkredov
Tuesday 6th March 2018 - Jonathan Noel
Reconfiguring Graph Colourings and Homomorphisms
Tuesday 6th February 2018 - Ben Barber
Isoperimetry in integer lattices
Tuesday 30th January 2018 - Misha Rudnev
Tuesday 12th December 2017 - Julia Wolf
Tuesday 5th December 2017 - Maryam Sharifzadeh
On the maximum number of integer colourings with forbidden monochromatic sums
Tuesday 28th November 2017 - Jonathan Bennett
The Kakeya-Brascamp-Lieb inequality
Tuesday 21st November 2017 - Sean Prendiville
Rado's criterion over higher powers.
Tuesday 7th November 2017 - Dmitry Zhelezov
Tuesday 31st October 2017 - Brendan Murphy
Solymosi's conjecture for rich lines in general position
Tuesday 24th October 2017 - Laura Mancinska
Relaxations of Graph Isomorphism
Tuesday 30th May 2017
