Henry Bradford

I am a Fellow and College Teaching Officer at Christ’s College Cambridge, and a member of the University of Cambridge’s Department of Pure Mathematics and Mathematical Statistics.

My area of research is asymptotic group theory. I am interested in a range of questions concerning constructions of expander graphs; diameters of Cayley graphs; word maps on groups and random walks. I am also increasingly interested in properties of infinite groups which allow one to approximate them by finite groups, including residual finiteness; local embeddability and soficity.

From 2016 to 2019 I was a postdoctoral research assistant at the University of Göttingen, where I worked in the research group of of Prof. Harald Andrés Helfgott. I completed my DPhil at the University of Oxford in 2015, under the supervision of Prof. Marc Lackenby.

Outside mathematics I am a music-lover; a jogger, and a collector of postcards.

Publications and preprints



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