Emily Roff

Preprints

[10] Motamed, Otter and Roff. Coalgebraic analysis of social systems.
arXiv:2602.23211, 2026
[9] Kinnear, Iannone and Roff. Course choices in undergraduate mathematics: A Situated Expectancy–Value analysis.
Preprint available upon request, 2025
[8] Hepworth and Roff. Bigraded path homology and the magnitude-path spectral sequence.
arXiv:2404.06689, 2024

Publications

[7] Katsumasa, Roff and Yoshinaga. Is magnitude 'generically continuous' for finite metric spaces?
arXiv:2501.08745; to appear in Discrete Analysis, 2026
[6] Roff and Yoshinaga. The small-scale limit of magnitude and the one-point property.
arXiv:2312.14497; Bulletin of the London Mathematical Society, DOI: 10.1112/blms.70064, 2025
[5] Hepworth and Roff. The reachability homology of a directed graph.
arXiv:2312.01378; International Mathematics Research Notices, 2025(3):1–18, 2025
[4] Roff. Iterated magnitude homology.
arXiv:2309.00577; Advances in Mathematics, 468(2025):110210, 2025
[3] Roff. Magnitude, homology, and the Whitney twist.
arXiv:2211.02520; Homology, Homotopy and Applications, 25(1):105–130, 2024
[2] Leinster and Roff. The maximum entropy of a metric space.
arXiv:1908.11184; The Quarterly Journal of Mathematics, 72(4):1271–1309, 2021

Thesis

[1] Roff. The size and shape of things: magnitude, diversity, homology. PhD thesis, University of Edinburgh, 2022
This contains all of the material in [2], most of [3] and some of [4], plus a chapter discussing alternative ways to extend magnitude homology from finite to infinite metric spaces.