KIAS Number Theory Seminar



Upcoming seminars

March 7 (Thu), 2024, 16:00--17:00, Room 8101

Title: Representation numbers of Bell-type quadratic forms

Speaker: Yeongwook Kwon (UNIST)

Abstract: In 1834, Jacobi proved his four-square theorem. The sum of four squares can be viewed as an example of the so-called Bell-type quadratic forms, and the representation number of Bell-type quadratic forms were studied by several authors. However, most preceding results only dealt with Bell-type forms of class number 1. In this talk, we derive a closed formula for the representation numbers of each Bell-type quadratic form of class number less than or equal to 2. This is joint work with Chang Heon Kim, Kyoungmin Kim and Soonhak Kwon.





Past seminars



Please send one of the organizers an email if you are interested in giving a talk. If you want to receive regular email announcement, please send an email with your name/affiliation, in title of "subscribe", to youngminlee@kias.re.kr.

The first number theory seminar started March 10th, 2005 and it became a regular seminar since then. For more information on the early history of the number theory seminar, see the article (by Soon-Yi Kang in KIAS News Letter, Fall 2005) and the following archive files.

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Number Theory Group at KIAS

Han, Jiyoung
Kim, Chan-Ho
Kim, Daejun
Lee, Youngmin
Yoo, Semin