YoungJu Choie


YoungJu Choie is a South Korean mathematician who works as a professor of mathematics at the Pohang University of Science and Technology. Her research interests include number theory and modular forms.

Education and career

Choie graduated from Ewha Womans University in 1982, and earned a doctorate in 1986 from Temple University under the supervision of Marvin Knopp. After temporary positions at Ohio State University and the University of Maryland, she became an assistant professor at University of Colorado in 1989, and moved to POSTECH as a full professor in 1990. Choie became a Fellow of the American Mathematical Society in 2013.

Mathematical work

Choie works on various aspects of Jacobi forms. Together with Winfried Kohnen, she has proved upper bounds on the first sign change of Fourier coefficients of cusp forms, generalizing the work of Siegel.

Choie has been an editor of International Journal of Number Theory since 2004. In 2010–2011 she was editor-in-chief of the Bulletin of the Korean Mathematical Society. She became a president of the society of Korean Women in Mathematical Sciences in 2017.
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Choie has received several awards such as "The best Journal Paper Award " from the Korean Mathematical Society, "Kwon, Kyungwhan" Chaired Professor at Pohang University of Science and Technology, "The best woman Scientist of the year" award from Ministry of Science and Technology, "Amore-Pacific The best Women in Science and Technology", KOFWST and the "2014 Distinguished research" award from Ministry of Education of Korea. In 2013, Choie became one of the inaugural fellows of the American Mathematical Society. Choie became the first female mathematician as member of the Korean Academy of Science and Technology in 2018., retrieved 2018-12-22. She was the first female mathematician who received the academic award of Korean Mathematical Society.