Preprints

1. MacManus, J. (2024). A note on transitve graphs quasi-isometric to planar (Cayley) graphs. arXiv preprint. arXiv:2407.13375. Link


2. Baligács, J., MacManus, J. (2024). The metric Menger problem. arXiv preprint. arXiv:2403.05630. Link


3. MacManus, J., Mineh L. (2024). Tiling in some nonpositively curved groups. arXiv preprint. arXiv:2401.09545. Link


4. MacManus, J. (2023). Accessibility, planar graphs, and quasi-isometries. arXiv preprint arXiv:2310.15242. Link

Publications

1. MacManus, J. (2024). Fat minors in finitely presented groups. To appear in Combinatorica. arXiv link


2. MacManus, J. (2022). Deciding if a hyperbolic group splits over a given quasiconvex subgroup. To appear in Groups, Geom. Dyn. arXiv link


3. Alexandru, C. -M., Bridgett-Tomkinson, E., Linden, N., MacManus, J., Montanaro, A., & Morris, H. (2020). Quantum speedups of some general-purpose numerical optimisation algorithms. Quantum Science and Technology, 5(4), 045014. arXiv link

Thesis

• Find my PhD thesis, titled Splittings, tiles, and planarity: a trio of problems in geometric group theory, at this link.

Talks

1. Isaac Newton Institute, Cambridge, OGG Colloquium (upcoming, November 2025) - All countable groups are quasi-isometry groups.


2. University of Bristol, Algebra Seminar (upcoming, October 2025) - On why quasi-isometry groups mean everything to me.


3. University of Oxford, Geometric Group Theory Seminar (May 2025) - Coarse geometry of planar groups.


4. University of Oxford, Junior Topology and Group Theory Seminar (May 2025) - Fat minors and where to find them.


5. Jagiellonian University, Kraków, Theoretical Computer Science Seminar (April 2025) - Asymptotic minors of Cayley graphs.


6. ICMAT, Madrid, Group Theory Seminar (March 2025) — Coarse characterisations of planarity in Cayley graphs.


7. University of Bristol, Geometry and Topology Seminar (October 2024) - Coarse characterisations of planarity in Cayley graphs.


8. World of Geometric Group Theory IV, Online (September 2024) - Coarsely characterising planarity in Cayley graphs.


9. University of Warwick, Geometry and Topology Seminar (February 2024) — Groups quasi-isometric to planar graphs.


10. University of Exeter, ITMAIA (February 2024) - Tilings in groups.


11. University of Oxford, Junior Topology and Group Theory Seminar (October 2023) - Reasons to be accessible.


12. University of Southampton, ECSTASy (August 2023) - Characterising surface groups.


13. Heriot-Watt University, PGTC (July 2023) - Understanding limit sets via finite automata.


14. University of Oxford, Junior Topology and Group Theory Seminar (May 2023) - Planar Cayley graphs and accessibility.


15. University of Cambridge, Junior Geometry Seminar (April 2023) - Splitting detection, and limit set complements.


16. University of Bristol, Junior Geometry Seminar (February 2023) - Will it split? Recognising edge groups in hyperbolic groups.


17. University of Oxford, Junior Topology and Group Theory Seminar (March 2022) - Detecting topological features of the Gromov boundary.

Misc.

• I ran the the Junior Topology and Group Theory seminar at Oxford for 2022-23.