Ewan Cassidy

About Me:

I am currently a postdoc at the University of Cambridge. I completed my PhD at Durham University in 2025, under the supervision of Prof. Michael Magee.

I am interested in topics at the intersection of group theory, expansion, random matrices and geometry.

In academic year 26/27, I will be co-organising the Cambridge Geometric Group Theory seminar along with Monika Kudlinska. If you have any questions or suggestions, feel free to get in touch!

Preprints:

Projection formulas and a refinement of Schur-Weyl-Jones duality for symmetric groups. [arXiv]

Submitted.

Random permutations acting on k-tuples have near-optimal spectral gap for k=poly(n). [arXiv] Talk

Submitted.

Word maps and surface relations in symmetric groups. [arxiv]

Preprint.

Contact:

egc45(at)cam(dot)ac(dot)uk

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