Oli Jones

(they/them)

I am a fourth year PhD Student at Technische Universität Berlin and Heriot-Watt University under the supervision of Laura Ciobanu. Previously, I completed my Masters in Mathematics and Computer Science at University of Oxford.

My interests are in combinatorial and geometric group theory. I am particularly interested in groups acting on trees, Artin groups, and automorphisms and their fixed points.

I was previously an organiser of the GEARS Seminar, a student seminar for algebraists at Universities of Glasgow, Edinburgh and Heriot-Watt.

I am on the job market for post-doc positions starting October 2026.

Email: jones [at] math [dot] tu-berlin [dot] de (preferred)

oj2003 [at] hw [dot] ac [dot] uk

Papers and Preprints

A combination theorem for the twist conjecture for Artin groups, with Giorgio Mangioni and Giovanni Sartori, preprint July 2025
JSJ splittings for all Artin groups, with Giorgio Mangioni and Giovanni Sartori, preprint June 2025
Type VF of Outer Automorphism Groups of Large-Type Artin Groups, preprint October 2024
Fixed Subgroups in Artin Groups, with Nicolas Vaskou, preprint July 2024 (accepted for publication in Groups, Geometry and Dynamics)
Fixed Points of Automorphisms of Torus Knot Groups, preprint September 2023 (accepted for publication in Journal of Group Theory)

Talks

Bilbao Algebra Seminar, September 2025: Cyclic splittings of Artin groups
World of Groupcraft V, September 2025: Cyclic splittings of Artin groups
University of Bonn Geometric Group Theory Oberseminar, June 2025: Finiteness properties for outer automorphism groups of large-type Artin groups
Bielefeld University Groups and Geometry Oberseminar, June 2025: Finiteness properties for outer automorphism groups of large-type Artin groups
ICMAT Group Theory Seminar, June 2025: Finiteness properties for outer automorphism groups of large-type Artin groups
University of Caen Normandy Algebra and Geometry Seminar, May 2025: Finiteness properties for outer automorphism groups of large-type Artin groups
North British Geometric Group Theory, University of Glasgow, December 2024: Finiteness properties for outer automorphism groups of large-type Artin groups
MAXIMALs, Heriot-Watt University, May 2024: Fixed Subgroups in Large Type Artin Groups
GAGTA, CIRM, February 2024: Fixed Subgroups in Generalised Baumslag Solitar Groups
GEARS Seminar, ICMS Edinburgh, November 2023: Fixed points of automorphisms of torus knot groups
PGTC, Heriot-Watt University, July 2023: Fixed Points in Torus Knot Groups
MAXIMALs, Heriot-Watt University, June 2023: Fixed Points in Torus Knot Groups
GlaMS Example Showcase, Glasgow, October 2022: An Example in Bass-Serre Theory

Teaching

Real Analysis and Linear Algebra for Engineers, teaching assistant Technische Universität Berlin, Summer 2025
Real Analysis, teaching assistant at Heriot-Watt University, Autumn 2024
Pure Maths A (Number Theory), teaching assistant at Heriot-Watt University, Spring 2024
Linear Algebra, teaching assistant at Heriot-Watt University, Autumn 2023
Functional Programming, lab demonstrator at University of Oxford, Autumn 2021

Miscellaneous

In December 2024 I co-organised and performed in a reading of the play Mathopoly: An Academic Dystopia at the ICMS in Edinburgh.

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