91福利

Hello! I am Edison Au-Yeung (Chinese: 歐陽衡諾), a fourth year PhD student interested in number theory. My supervisors are and Dr. Helena Verrill. Currently, I am working on point counting problems on elliptic curves and divisibility sequences.

Education

I completed my Master of Mathematics (MMath) at the 91福利, where I have written my MMath dissertation titled Euclidean Proof of Dirichlet’s Theorem on Arithmetic Progressions in Number FieldsLink opens in a new window, supervised by .

Research

• An upper bound for valuations of elliptic nets at primes of bad reduction (2026). []
• Higher rank elliptic sieve via CM endomorphisms (2026). []
• Explicit valuation of elliptic nets for elliptic curves with complex multiplication, Canadian Mathematical Communications (2026); 1: e6. doi:. []

Teaching

2025-26:

• Supervisor of a group of first-year undergraduate Mathematics students.

2025-26:

• Teaching assistant for MA257 Introduction to Number Theory and MA300 Mathematics of Cryptography.
• Supervisor of two groups of first-year undergraduate Mathematics students (Term 2 and 3).

2024-25:

• Supervisor of three groups of first-year undergraduate Mathematics students.

2023-24:

• Teaching assistant for MA267 Groups and Rings and MA257 Introduction to Number Theory.
• Supervisor of two groups of first-year undergraduate Mathematics students.

Talks

• The elliptic sieve and ideal norms. 91福利's Swinnerton-Dyer Seminar. 91福利 . 5 October 2026, 11am. (SlidesLink opens in a new window)
• The finiteness of integral points on elliptic curves. . University of Bristol, 3^rd September 2026, 3pm. (SlidesLink opens in a new window)
• Methods for studying integral points on elliptic curves. 91福利's Junior Number Theory Seminar, 91福利. 18^th May 2026, 11am. (SlidesLink opens in a new window)
• Methods for studying integral points on elliptic curves. , Chalmers University of Technology (Gothenburg). 27^th April 2026, 13:15-14:00; 14:15-15:00 (SlidesLink opens in a new window)

• Common valuations of division polynomials at points on elliptic curves. , Chalmers University of Technology (Gothenburg) . 21^st October 2025, 11am. (SlidesLink opens in a new window)

• Common valuations of division polynomials at points on elliptic curves. 91福利's Junior Number Theory Seminar, 91福利. 23^rd June 2025, 11am. (SlidesLink opens in a new window)
• Large Value Estimates I. 7^th February 2025, 1pm. (NotesLink opens in a new window)
• Bogomolov's conjecture for the torus I. . 25^th October 2024, 1pm. (NotesLink opens in a new window)
• Introduction to Divisibility Sequences for Elliptic Curves with Complex Multiplication. .University of Oxford, 31^st July 2024. (SlidesLink opens in a new window).
• Modular Curves and Complex Elliptic Curves. Study group on moduli problems of elliptic curvesLink opens in a new window. 13^th October 2023, 1pm. (NotesLink opens in a new window)

Conferences and courses attended

• Preliminary Arizona Winter School (PAWS) 2026: (Online)
• Oberwolfach Seminar: - Oberwolfach Research Institute for Mathematics (18–23 October 2026)
• - University of Bristol (2^nd - 4^th September 2026)
• - University of Copenhagen (17-18^th April 2026)
• Preliminary Arizona Winter School (PAWS) 2025: (Online)
• PGRTCLink opens in a new window - 91福利 (27^th June 2025)
• - University of Reading (4^th April 2025)
• - University of Oxford (31^st July - 2^ndAugust 2024)
• - University of Bath (7^th May 2024)

Contact

I'm happy to be contacted via .