Fu-Tsun Wei

activity

20112020

collaborators

7 papers

math.NT2020

On class number relations, intersections, and GL(2)-tale over the function field side

Jia-Wei Guo, Fu-Tsun Wei

The aim of this paper is to study class number relations over function fields and the intersections of Hirzebruch-Zagier type divisors on the Drinfeld-Stuhler modular surfaces. The…

math.NT2020

Sturm-type bounds for modular forms over functions fields

Cécile Armana, Fu-Tsun Wei

In this paper, we obtain two analogues of the Sturm bound for modular forms in the function field setting. In the case of mixed characteristic, we prove that any harmonic cochain i…

math.NT2019

Drinfeld discriminant function and Fourier expansion of harmonic cochains

Mihran Papikian, Fu-Tsun Wei

Let $F_{\infty} = F_{q} ((1/ T))$ be the completion of $F_{q} (T)$ at $1/ T$ . We develop a theory of Fourier expansions for harmonic cochains on the edges of the Bruhat-T…

math.NT2018

On Kronecker terms over global function fields

Fu-Tsun Wei

We establish a general Kronecker limit formula of arbitrary rank over global function fields with Drinfeld period domains playing the role of upper-half plane. The Drinfeld-Siegel…

math.NT2018

Generalized Jacobians of modular and Drinfeld modular curves

Fu-Tsun Wei, Takao Yamazaki

We consider the generalized Jacobian $J$ of the modular curve $X_{0} (N)$ of level $N$ with respect to a reduced divisor consisting of all cusps. Supposing $N$ is square f…

math.NT2012

Class numbers of central simple algebras over global function fields

Fu-Tsun Wei, Chia-Fu Yu

Let $K$ be a global function field together with a place $\infty$ , and $A$ the subring of functions regular outside $\infty$ . In this paper we present an effective method to evalua…