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math.NT2023
Gauss's form class groups and Shimura's canonical models
Ja Kyung Koo, Dong Hwa Shin, Dong Sung Yoon
Let be a positive integer and be a subgroup of containing . Let be an imaginary quadratic field and be an order of dis…
math.NT2023
Class fields and form class groups for solving certain quadratic Diophantine equations
Ho Yun Jung, Ja Kyung Koo, Dong Hwa Shin +1
Let be an imaginary quadratic field and be an order in . We construct class fields associated with form class groups which are isomorphic to certain $\mathcal{…