I started my graduate course in POSTECH at Sep. 2018, but I left it due to the mandatory military service for Mar. 2019 - Oct. 2020.

• Integrated Master's-Ph.D Program, POSTECH, Sep. 2018 - present

• Military Service, Mar. 2019 - Oct. 2020

• B.Sc. in Mathematics, POSTECH, Mar. 2014 - Aug. 2018

•  On the Siegel series in terms of lattice counting (with Sungmun Cho), 24 pages, submitted

• Stable orbital integrals for classical Lie algebras and smooth integral models (with Sungmun Cho and  Yuchan Lee), 139 pages, submitted

• Arithmetic Geometry

• Number theory

• (2018 Fall) Recitation Instructor, Calculus

• (2020 Fall) Recitation Instructor, Applied Linear Algebra

• (2021 Spring) Grader, Introduction to Geometric Topology

• (2021 Fall) Grader, Theory of Analytic functions

• (2022 Fall) Recitation Instructor, Modern Algebra 1

• (2023 Spring) Grader, Introduction to Geometric Topology

• (2023 Fall) Grader, Theory of Analytic functions / Grader, Commutative Algebra

• (2024 Spring) Recitation Instructor, Differential Equations

Here I uploaded some notes I wrote. Some of them are written informally, since I didn't intend to share them with others originally.  Please let me know if you find any errors or typos.

• FOGA Exercises (Last update : Dec. 2020) 

• Twisted forms (Last update : Mar. 2021)

• Simplicial CW approximation (Last update: Jul. 2020): A final project of the course 'Algebraic Topology 2' in 2020 spring at POSTECH. 

• Cousin Problems(Last update : Dec. 2020) : A final project of the course 'Complex Analysis' in 2020 fall at POSTECH.