Henri Johnston

Contact Information

Postal address:
College of Engineering, Mathematics and Physical Sciences
Harrison Building
Streatham Campus
University of Exeter
North Park Road
Exeter EX4 4QF
United Kingdom

Phone: +44 (0)1392 723650
Fax: +44 (0)1392 217965
Office: Harrison Building, Room 216B
Email: [my first initial] dot [my last name] at exeter.ac.uk

About me

I am senior lecturer in pure mathematics at the University of Exeter. I was previously fellow and college lecturer in pure mathematics at St. John's College, Cambridge. Before that, I was stipendiary lecturer in pure maths at St. Hugh's College, Oxford. In August 2007, I finished as a graduate student in the mathematics department at Cornell University where my supervisor was Ravi Ramakrishna. For the 2006-07 academic year, I visited Cornelius Greither at Universität der Bundeswehr München, Germany. I am originally from Jersey in the Channel Islands.

Research Interests

Algebraic number theory and related topics, including: the equivariant Tamagawa number conjecture (ETNC), Iwasawa theory, Galois module theory, computational number theory, noncommutative Fitting invariants, and integral representation theory.


Click here for my Google Scholar profile or here for a list of my papers on the arXiv.

Graduate Course

Here are some rough notes from a graduate course I taught on Galois Modules. Comments and corrections welcome.

Workshop on Stark's conjectures, Iwasawa theory and related topics

Andreas Nickel and I organised a workshop on Stark's conjectures, Iwasawa theory and related topics, which took place 3rd-5th September 2018 at the University of Exeter. Click here for more information.

Hopf-Galois Theory and Galois Module Structure Workshop

Click here for more information on this workshop, which was held 23rd - 26th June, 2015 at the University of Exeter.

Maths Books and Notes

Maths Links

Last updated: 29th October 2018