Figure 1. Photograph of the author (Taken in 2024).
Abstract. I am Junnosuke Koizumi, a postdoctoral researcher at RIKEN iTHEMS in Japan. My research focuses on algebraic and arithmetic geometry. I also enjoy elementary mathematics and mathematical puzzles.
My name is Junnosuke Koizumi. I am a postdoctoral researcher in mathematics at RIKEN iTHEMS in Japan. I received Ph.D. from the University of Tokyo in 2024, under the supervision of Shuji Saito and Shane Kelly. My research interests lie in algebraic geometry and arithmetic geometry, particularly in the theory of mixed motives and motivic homotopy theory, as well as their non-\(\mathbb{A}^1\)-invariant extensions.
I also have a great love for elementary mathematics, especially discrete geometry and combinatorics. Recently, I have been actively working on unsolved problems posed by Erdős.
Figure 1. Photograph of the author (Taken in 2024).