havard.damm-johnsen at maths.ox.ac.uk (CV)

I am a DPhil (i.e. PhD) student in the number theory group at the University of Oxford under the supervision of Prof. Damian Rössler and Dr. Jan Vonk. I am supported by an Aker scholarship. Before coming to Oxford, I did a BSc (Hons) at the University of Edinburgh with my third year spent at Caltech.

My research interests are broadly speaking in arithmetic geometry, in particular the arithmetic of elliptic curves, explicit class field theory and *p*-adic approaches to singular moduli of real quadratic fields.

- (this will hopefully be populated at some point)

**Michaelmas term 2021:**Tutor and TA in Part B: Galois theory**Trinity term 2021:**Andrés and I ran a seminar on étale cohomology.**Hilary term 2021:**Teaching assistant in Part C: Elliptic curves**Hilary term 2021:**Teaching assistant in Part B: Commutative Algebra**Michaelmas term 2020:**Teaching assistant in Part B: Galois theory

*There is a wide variety of errors hidden in these notes; reader beware!*

- The Manin-Drinfeld theorem: an essay for a Hodge theory course taught by Nils Matthes and Tiago Jardim da Fonseca during Trinity term 2021.
- Ideal lattices in cryptography: a final report from a summer research project on post-quantum cryptography.
- Kac-Moody algebras: notes from a topics course on the representation theory of Kac-Moody algebras at the University of Edinburgh, spring 2020.
- Galois theory of Schemes: my senior thesis at the University of Edinburgh, supervised by Dr. Clark Barwick.
- Theta functions: an essay I wrote for a reading course on modular forms, supervised by Prof. Chris Smyth.
- Singular Minimisers in the Calculus of Variations: the result of a summer project I did with Dr. Richard Gratwick in 2018.

- Arithmetic and Geometry of Varieties with Trivial Canonical Bundle

Oslo, Norway,*14-16/12/21* - Young
Researchers in Algebraic Number Theory (Y-RANT) III

University of Bristol,*18-20/08/2021*(online) - PCMI summer school: Number
theory informed by computation

Park City Mathematical Institute,*26-30/07/2021*(online) - Theta
Series: Representation Theory, Geometry, and Arithmetic

Fields Institute,*05-09/07/21*(online) - New
connections in number theory and physics

Isaac Newton Institute,*24-28/05/21*(online) - Unlikely Intersections, Diophantine geometry, and related fields

University of Reading*12-16/04/21*(online)