Adelic framed form class groups and explicit class field theory

Ja Kyung Koo, Dong Hwa Shin, Dong Sung Yoon

Let $D$ be a negative discriminant, and let $K=\mathbb{Q}(\sqrt{D})$. Let $\mathcal{Q}(D)$ denote the set of primitive positive definite binary quadratic forms over $\mathbb{Z}$ of…