activity
20242026
collaborators

6 papers

math.NT2026

Difference of the modular function , revisited

Wei-Lun Tsai, Dongxi Ye

Adapting the analytic method of Gross and Zagier, Roskam proved a prime-factorization formula for the norm of the difference of two level-two Weber singular moduli. Independently,…

math.NT2026

On the Petersson norm

Wei-Lun Tsai, Dongxi Ye

Let be an imaginary quadratic field of discriminant~, and for , let be a Hecke character of with trivial finite conductor and infinite type~$(2\ell,0…

math.NT2025

Central values of congruent number elliptic curves

Xuejun Guo, Dongxi Ye, Hongbo Yin

Let be the congruent number elliptic curve , where is square-free and not divisible by primes . In this paper, we prove that ca…

math.NT2024

Euler-type recurrences for -color and -regular partition functions

Tapas Bhowmik, Wei-Lun Tsai, Dongxi Ye

We give Euler-like recursive formulas for the -colored partition function when or as well as for all -regular partition functions. In particular, we derive an in…

math.NT2024

The Modularity of Z.-W. Sun's Conjectural Formulas for

Mark van Hoeij, Wei-Lun Tsai, Dongxi Ye

In this work, we establish modular parameterizations for two general formulas for that subsume conjectural Ramanujan type formulas due to Z.-W. Sun, which have remained…

math.NT2024

Lucas congruences using modular forms

Frits Beukers, Wei-Lun Tsai, Dongxi Ye

In this work, we prove that many Apéry-like sequences arising from modular forms satisfy the Lucas congruences modulo any prime. As an implication, we completely affirm four conjec…