11 citations · 17 across the 30 of their papers we have counts for
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math.NT2015
On Siegel invariants of certain CM-fields
Ja Kyung Koo, Gilles Robert, Dong Hwa Shin +1
We first construct Siegel invariants of some CM-fields in terms of special values of theta constants, which would be a generalization of Siegel-Ramachandra invariants of imaginary…
math.NT2015★ 1 cited
Primitive and totally primitive Fricke families with applications
Ho Yun Jung, Ja Kyung Koo, Dong Hwa Shin
We introduce the primitivity of Fricke families, and give some examples. As its application, we first construct generators of the function field of the modular curve of level i…
math.NT2015
Determination of the Fricke families
Ick Sun Eum, Dong Hwa Shin
For a positive integer divisible by , let be the ring of weakly holomorphic modular functions for the congruence subgroup with rationa…