Gyujin Oh

[gyoo-jin]

I am a Ritt Assistant Professor at Columbia University. I am interested in number theory and its related areas.

I was a postdoctoral member of the SLMath/MSRI program Algebraic Cycles, L-Values, and Euler Systems in Spring 2023.

I received my PhD in mathematics in 2022 from Princeton University. My advisors were Christopher Skinner and Akshay Venkatesh.

You can find my CV here.

Email: firstnamelastname at math dot columbia dot edu.

Office: 517 Mathematics.

Research.

- Theta characteristics and noncongruence modular forms. Preprint.

- Derived Hecke algebra for weight one forms via classicality. Draft undergoing revisions.

- Coherent cohomology of Shimura varieties, motivic cohomology, and archimedean *L*-packets. Preprint.

- Higher Koecher's principle, harmonic Hilbert Maass forms, and their Borcherds lift. Preprint.

- A proof of Néron-Ogg-Shafarevich criterion via its archimedean analogue. Preprint.

- On the distribution of cyclic number fields of prime degree (with Seok Hyeong Lee). Int. J. Number Theory 8 (2012), 1463-1475. link.

Not intended for publication:

- Lecture notes for Undergraduate Algebraic Number Theory (GU4043, Spring 2024, Columbia).

- No abelian scheme over ℤ. Part III Essay.

- Brauer obstructions of finite groups of Lie type in view of the Local Langlands Correspondence. Bachelor's thesis.

There are also miscellaneous write-ups, including some lecture notes I transcribed.

Teaching.

In Fall 2024 I will teach Calculus III. Website

Seminars.

This semester I am running a seminar on the relative Langlands duality.