Chao Qin

activity

20242026

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2 papers · 1 filter

math.NT2025

On even $K$ -groups of rings of integers of real abelian fields

Meng Fai Lim, Chao Qin

We present approaches for calculating the precise orders of the algebraic $K$ -groups $K_{4 n - 2} (O_{K})$ for a totally real abelian $K$ . Along the way, we also establish a fo…

math.NT2025

Explicit Hecke eigenform product identities for Hilbert modular forms

Zeping Hao, Chao Qin, Yang Zhou

Let $F$ be a totally real number field, and $g, f, h$ be Hilbert modular forms over $F$ that are Hecke eigenforms satisfying $g = f \cdot h$ . We characterize such product identities amo…

On even K-groups of rings of integers of real abelian fields

Explicit Hecke eigenform product identities for Hilbert modular forms

On even $K$ -groups of rings of integers of real abelian fields