D. Yoon

activity

20102026

x_{1}^{2} + 2 x_{2}^{2} + x_{3}^{2} + x_{4}^{2} + x_{1} x_{3} + x_{1} x_{4} + x_{2} x_{4}

1 citations · 3 across the 15 of their papers we have counts for

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math.NT2010

Algebraic integers as special values of modular units

Ja Kyung Koo, Dong Hwa Shin, Dong Sung Yoon

Let $φ (τ) = η ((τ + 1) /2)^{2} / 2 π e^{\frac{π i}{4}} η (τ + 1)$ where $η (τ)$ is the Dedekind eta-function. We show that if $τ_{0}$ is an imaginary quadratic number with $Im (τ_{0}) > 0$ an…

math.NT2010

Ray class fields generated by torsion points of certain elliptic curves

Ja Kyung Koo, Dong Hwa Shin, Dong Sung Yoon

We first normalize the derivative Weierstrass $℘^{'}$ -function appearing in Weierstrass equations which give rise to analytic parametrizations of elliptic curves by the Dedekind $η$ …