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Hi
KITTIPONG SUBWATTANACHAI
キッチポン・サブワタナチャイ
"
Don't worry about being perfect.
Just try your best.
"
สวัสดีครับ (sa-wat-dee-krap)
My name is Kittipong Subwattanachai. I am a professor at Kasetsart University (Kamphaeng Saen Campus) in the Department of Computer Science and Digital Technology, Faculty of Liberal Arts and Science.
Originally from Thailand, I was a math Ph.D. candidate at Nagoya University. My research interests are in number theory, especially regarding Frobenius problems, Diophantine equations, and many beautiful patterns in discrete mathematics.
Whether you're a fellow researcher, a student, or just curious, welcome to my homepage!
🙋About me
🙋About me
Name: Kittipong Subwattanachai
(kit-ti-pong sub-wat-ta-na-chai)
(กิตติพงศ์ ทรัพย์วัฒนาชัย)
Email: - subwattanachai.k@gmail.com (personal)
- kittipong.sub@ku.th (KU Gmail)
Backgroung:
I earned both my bachelor’s and master’s degrees in mathematics at Silpakorn University, where I had the privilege of studying under Professor Prapanpong Pongsriiam. He introduced me to the rich and beautiful world of number theory and truly inspired me to explore beyond the classroom.
In 2022, I moved to Japan to begin my Ph.D. at Nagoya University. I was initially supervised by Professor Kohji Matsumoto, a leading expert in analytic number theory, until his retirement in 2023. Since then, I’ve been working under the guidance of Professor Henrik Bachmann, whose support and perspective have helped deepen and broaden my research.
🎓Education
🎓Education
Ph.D. in Mathematics, Graduate School of Mathematics, Nagoya University, Japan (October 1, 2021 - September 29, 2025)
M.Sc. in Mathematics, Department of Mathematics Faculty of Science, Silpakorn University (May 25, 2018 - May 25, 2021)
B.Sc. in Mathematics, Department of Mathematics Faculty of Science, Silpakorn University (August 18, 2014 - May 27, 2018)
📑Research interests
📑Research interests
My main research interest lies in number theory, especially in its combinatorial and computational aspects. I have worked on various problems concerning integer partitions, Frobenius problems, arithmetic functions, palindromes, happy numbers, happy functions, and the beautiful patterns hidden in integral sequences such as triangular numbers, the Fibonacci sequence and so on.
📙My Ph.D. thesis focuses on generalized Frobenius numbers, especially when the input is a triple of triangular numbers. I’m also interested in the behavior of denumerants, generating functions, and quasi-polynomials arising from counting problems.
I also enjoy using Python and SageMath to experiment with formulas and visualize patterns, especially when working with sequences, generating series, or digital functions.
💬Upcoming events
💬Upcoming events
Currently seeking opportunities to present or collaborate.
Last update: April 20, 2026
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