Hyosang  Kang

Educations

• BS 2005 Department of Mathematics, KAIST, South Korea

• PhD 2011 Department of Mathematics, University of Michigan 

  • Lizhen Ji is my research advisor and mentor, for whom I am deeply grateful.

Professional Experiences

• 01/2011 – 09/2015 Researcher, Korea Institute for Advanced Studies (KIAS)

• 02/2015 – 01/2017 Visiting Professor, DGIST

• 02/2017 – 08/2021 Assistant Professor, DGIST

• 09/2021 – 02/2026 Associate Professor, DGIST

• 04/2021 – 02/2022 Chair, Department of Undergraduate Studies, DGIST

• 03/2026 – current Professor, DGIST

• 01/2026 – 01/2027 University Guest, Department of Infrastructure, University of Melbourne

Research Grant

• 03/2020 – 02/2023 National Research Foundation
  Developing efficient quantum error correcting codes using hyperbolic lattices
  90,000,000 KRW (equivalent to approximately 60,000 USD)

Publications

• Hyosang Kang. Cofinite proper classifying spaces for lattices in semisimple Lie groups of R-rank 1, Comm. KMS. Vol 32 No. 3. (2017) doi.org/10.4134/CKMS.c160222

• Kim Gahyun, Tae Seob Shin, Jae yong Chung, Junyoung Park, Ji-Woong Choi, Chang-Hun Lee, Hyosang Kang, and Kwon Min Jae. Development and Validation of a Measurement Scale for an Institute of Science & Technology Core Competencies. 공학교육연구, 23(5), 76-85. (2020) 10.18108/jeer.2020.23.5.76

• Hyosang Kang, Hyunwoo Jung, Chaehwan Seol, Namho Hong, Hyunjin Lim, and Seokhyun Um. A degree reduction method for an efficient QUBO formulation for the graph coloring problem, The Pure and Applied Mathematics 31(1):57–81. (2024) 10.7468/jksmeb.2024.31.1.57

  • This research was funded by Daegu Science High School and collaboratively conducted with five high school students from the institution.

• Hyosang Kang, Woojin Choi, Jeonghoon Rhee, and Youchan Oh, The boundary of Rauzy fractal and discrete tilings, Chaos, Solitons & Fractals: X, Vol 14. (2025) doi.org/10.1016/j.csfx.2025.100126

  • This research was conducted in collaboration with one undergraduate student (the second author) and two science high school students.

• Hyosang Kang, Calculus revisited with Go language (Original title: Go로 다시 보는 미적분학). Kyungmoon(경문사) (2025) ISBN: 979-11-6073-753-0

  • Available in e-book(link) or paperback(link)

• Hyosang Kang, Learning Calculus with Python Projects (Original title: 파이썬 프로젝트로 배우는 미분적분학). Hanbit(한빛아카데미) (2025) ISBN: 979-11-7340-033-9

  • Available in paperback(link)

Taught Courses

• University of Michigan, as GSI (Graduate Student Instructor, 2005 – 2011)

  • Math 105 Data, Functions, and Graph (Fall 2005, Winter 2006)

  • Math 115 Calculus I (Fall 2006, Fall 2010)

  • Math 116 Calculus II (Fall 2007, Winter 2007, Fall 2008, Winter 2008, Winter 2009)

  • Math 215 Multivariable & Vector Calculus (Winter 2010)

  • Math 216 Introduction to Differential Equation (Fall 2009)

• DGIST (2015 – current)

  • BS102 Engineering Mathematics I (Spring 2022-2025)

    • Spring 2023(Syllabus, video), Spring 2024(Syllabus, video), Spring 2025

  • SE102(BS101) Multivariable Calculus (Fall 2015-2022, 2024-2025)

    • Fall 2022(Syllabus, video), Fall 2024(Syllabus, video), Fall 2025(video)

  • TP404 Introduction to Quantum Computing (Fall 2021-2025)

    • Fall 2022(Syllabus, video), Fall 2023(Syllabus, video), Fall 2024(Syllabus, video), Fall 2025(video)

  • TP403 Introduction to Geometry (Fall 2022-2025)

    • Spring 2023(Syllabus, video), Spring 2024(Syllabus, video), Spring 2025

  • SE201 Linear Algebra (Spring 2019, Fall 2023)

    • Fall 2023(Syllabus, video--introduction session only)

  • SE101(BS102) Applied Calculus and Differential Equations (Spring 2015-2018, 2020, 2021)

  • SE202 Integrated Engineering Mathematics (Fall 2017-2018. Spring 2025)

  • SE420 Differential Geometry (Spring 2017-2021)

  • SE328 Topology (Fall 2019-2020)

  • SE425 Topics in Applied Mathematics: Matrix Groups (Fall 2019)

Sample Lectures

• On the Taylor series (from Applied Calculus and Differential Equations) (Link)

• On the modeling of a neural network (from Multivariable Calculus) (Link)

• On the Deutsch-Jozsa algorithm (from Introduction to Quantum Computing) (Link)

A Short Biography

I enjoyed solving mathematics problems during secondary school. I participated in Mathematics Olympiad activities and attended a science high school in Daegu, South Korea, which gave me ample opportunities to study mathematics in depth. I became interested in the lives of mathematicians through the book Fermat’s Last Theorem. It led me to admire the intellectual freedom of mathematicians and strongly influenced my decision to pursue the path of a mathematician.

I attended the Korea Advanced Institute of Science and Technology (KAIST), where I studied mathematics, biology, computer science, and statistics. One class I still remember is History of Science and Technology, in which I enjoyed reading the course book and wrote a long final essay on how religion and science have interacted during their development. Upon graduation, I had a choice between dental school at Seoul National University (SNU) and a PhD program at the University of Michigan. I valued living outside Korea and meeting new challenges, so I chose to study at Michigan.

Recent hobby

Handmade frames by Deform Blocks.