Yifan Yang

most citedModular unit and cuspidal divisor class groups of X_1(N)

4 citations · 5 across the 3 of their papers we have counts for

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math.NT2007★ 4 cited

Modular unit and cuspidal divisor class groups of X_1(N)

Yifan Yang

In this article, we consider the group $F_{1}^{\infty} (N)$ of modular units on $X_{1} (N)$ that have divisors supported on the cusps lying over $\infty$ of $X_{0} (N)$ , called the $\infty$ -c…

math.NT2007

Defining equations of $X_{0} (2^{2 n})$

Fang-Ting Tu, Yifan Yang

In this note we obtain defining equations of modular curves $X_{0} (2^{2 n})$ . The key ingredient is a recursive formula for certain generators of the function fields on $X_{0} (2^{2 n})$ .

math.NT2005★ 1 cited

Differential equations satisfied by modular forms and K3 surfaces

Yifan Yang, Noriko Yui

We study differential equations satisfied by modular forms associated to $Γ_{1} \times Γ_{2}$ , where $Γ_{i} (i = 1, 2)$ are genus zero subgroups of $S L_{2} (R)$ commensurable with $SL_2(…

Modular unit and cuspidal divisor class groups of X_1(N)

Defining equations of X0​(22n)

Differential equations satisfied by modular forms and K3 surfaces

Defining equations of $X_{0} (2^{2 n})$