Yichen Qin

Assistant Professor, Fudan University

Before joining Fudan, I was a postdoc at Humboldt Universität zu Berlin (2022–2025), working with Bruno Klingler. I received my PhD from École Polytechnique in 2022, supervised by Javier Fresán and Claude Sabbah.

My research interests lie in arithmetic geometry, especially exponential sums, Hodge theory, and periods.

Curriculum Vitae

Preprints and Publications

Classical and irregular Hodge numbers
with Dingxin Zhang

arXiv:2603.06040
On Siegel's problem and Dwork's conjecture for $G$-functions
with Javier Fresán and Joshua Lam

submitted
Irregular Hodge numbers of Frenkel-Gross connections
with Christian Sevenheck and Peter Spacek

to appear in Algebraic Geometry
Rigid $G$-connections and nilpotency of $p$-curvatures
with Pengfei Huang and Hao Sun

arXiv:2410.09929
Irregular Hodge filtration of hypergeometric differential equations
with Daxin Xu

Algebra & Number Theory, Vol. 19 (2025), No. 12, 2481–2514.

DOI
$L$-functions of Kloosterman sheaves
Proceedings of the London Mathematical Society, Vol. 129 (Issue 5), e70003.

DOI Sagemath Code
Hodge numbers of motives attached to Kloosterman and Airy moments
Journal für die reine und angewandte Mathematik (Crelle's Journal), Vol. 2024 (Issue 808), 143–192.

DOI

Organization

Seminars

Fudan Number Theory Seminar, a joint seminar of SMS, SCMS and SIMIS.
Organizers: Miaofen Chen, Yichen Qin, Rufei Ren, Haining Wang, Yupeng Wang, Lingfei Yi, Dingxin Zhang.

Conferences and Workshops

2025 Conference on Analytic Number Theory, Fudan University, Shanghai.
Organizers: Miaofen Chen, Yichen Qin, Rufei Ren, Haining Wang, Yupeng Wang, Lingfei Yi, Dingxin Zhang.

Teaching

At Fudan University

2025 Autumn: TA of MATH10009 – Advanced Algebra.
Instructor: Prof. Qihong Xie.
2026 Spring: TA of MATH10019 – Advanced Algebra.
Instructor: Prof. Qihong Xie.

At École Polytechnique (2019–2022)

2021 Autumn: TA of MAA201 – Euclidean and Hermitian spaces.
Instructor: Prof. David Renard.
2021 Spring: TA of MAA206 – Quadratic Forms and Applications.
Instructor: Prof. Thomas Gauthier.
2019 Spring: TA of MAA105 – Integral and Differential Calculus.
Instructor: Prof. Jérémie Bettinelli.
2019 Spring: TA of MAA206 – Quadratic Forms and Applications.
Instructor: Prof. Thomas Gauthier.