Julie Tavernier
Maths PhD Student, University of Bath

I am a PhD student at the University of Bath, supervised by Professor Daniel Loughran. I am interested in rational points, analytic number theory and applying techniques from harmonic analysis to counting problems. I am currently working how to interpret counting results for number fields via rational points on stacks.
When not doing maths, I enjoy reading books, petting animals and playing video games.
I am one of the organisers of the Great Western Number Theory (GWNT) Seminar.
Talks
2025:
- Oxford Junior Number Theory Seminar (Invited Speaker)
- Kyoto University Number Theory Seminar (Invited Speaker)
- Osaka One-day Workshop on Arithmetic of Stacks and Coverings
- Statistics of Class Groups and Number Fields Workshop
- London Junior Number Theory Seminar (Invited Speaker)
- Women in Number Theory and Geometry (WINGs) 2025
- Nottingham Pure Mathematics Seminar (Invited Speaker)
- Linfoot Number Theory Seminar: Abelian number fields with restricted ramification type and rational points on stacks (Invited Speaker)
2024:
- The Advent of Rational points II: The Second Coming: Number fields with restricted ramification and rational points on stacks (Invited speaker) slides
- Warwick Junior Number Theory Seminar: Counting abelian number fields whose conductor is the sum of two squares (Invited speaker)
- Bath Arithmetic Geometry Seminar : Counting abelian number fields whose conductor is the sum of two squares (Invited speaker)
- Y-RANT VI : Counting with frobenian conditions
Publications
Counting abelian number fields with restricted ramification type [arXiv:2507.00448] (submitted)
Abelian number fields with frobenian conditions [arXiv:2407.14341] (submitted)
Grants
2025: Recipient of the JSPS Postdoctoral Fellowship for Research in Japan (Summer program)
Conference/Workshop Attendance
2024:

- University of Groningen: Instructional Workshop on Rational Points
- University of Pisa: A Modern Introduction to Number Theory
- University of Bath: The Spring of Rational Points
- University of Bath: Great Western Number Theory Seminar
2023:
- Imperial College London: Rational Points in Imperial
Education
2023-2027: University of Bath: PhD Mathematics
- Current topic: Counting abelian number fields of bounded height; a stacky version of Malle’s conjecture.
- Previous work: Counting abelian number fields with frobenian conditions.
- Supervisor: Dr Daniel Loughran
2022-2023: MSc Mathematics, University of Oxford
- Dissertation topic: Modular forms and elliptic curves, the proof of Fermat’s last theorem
- Dissertation supervisor: Dr Aleksander Horawa
2018-2022: BSc Pure Mathematics, University of Nottingham
- Awarded the Elizabeth and J D Marsden Prize (Third place)
- LMS Undergraduate Research Bursary (Summer 2021)
- Research title: The denominator of modular symbols
- Research topic: Using Sagemath to compute the possible values of the modular symbols attached to elliptic curves over the rational numbers.
- Project supervisor: Dr Christian Wuthrich

Teaching
Tutor for First Year Algebra 1A and Algebra 1B, University of Bath
Contact
jlt86-at-bath.ac.uk