Address
Department of Mathematical Sciences
Claremont McKenna College
850 Columbia Avenue
Claremont, CA 91711
Phone: (909) 607 - 5006
E-mail: sehjeong@cmc.edu
Office: Marian Miner Cook Athenaeum 217
Personal
Born in Seoul, South Korea
Fluent in Korean (native) and English languages
Member of AMS (American Mathematical Society)
Professional Experience
Visiting Assistant Professor
Claremont McKenna College, July 2025 - present
Teaching Assistant
Claremont McKenna College, August 2023 - May 2025
Claremont Graduate University, September 2024 - December 2024
Grader
Claremont McKenna College, August 2023 - May 2025
Pitzer College, February 2025 - May 2025
Pomona College, September 2021 - December 2021, March 2025 - May 2025
Education
Ph.D. in Mathematics, August 2025
Claremont Graduate University
Advisor: Professor Lenny Fukshansky at Claremont McKenna College
Thesis: Diophantine avoidance, number fields, and quadratic forms
M.S. in Mathematics, May 2017
California State University, Long Beach
B.S. in Mathematics, June 2014
University of California, Irvine
Research Interests
Algebraic number theory, geometry of numbers, theory of height functions, lattice theory, arithmetic of quadratic forms, Diophantine approximation
Publications
(with Lenny Fukshansky) Diophantine avoidance and small-height primitive elements in ideals of number fields, Combinatorics and Number Theory, vol. 13 no. 4 (2024), p. 333-350.
(with Lenny Fukshansky) Integral zeros of quadratic polynomials avoiding sublattices, The Ramanujan Journal, vol. 66 no. 2 (2025) Paper no. 26, 10 pp.
Invited Talks
Primitive elements in number fields and Diophantine avoidance
Southern California Number Theory Day 2025 at UC Irvine, Irvine, CA, October 18, 2025
Integral quadratic forms and lattice angles
Southern California Discrete Mathematics Symposium 2025 at UC Irvine, Irvine, CA, April 6, 2025
Primitive elements in number fields and Diophantine avoidance
Number Theory Seminar at UC Irvine, Irvine, CA, October 10, 2024
Primitive elements in number fields and Diophantine avoidance
2024 Langenhop Lecture & Southern Illinois University Conference, Carbondale, IL, May 16-17, 2024
Honors, Awards, Scholarships
Peeler Endowed Fellowship, Claremont Graduate University, 2022-2023
Math Fellowship, Claremont Graduate University, 2020-2022
Honors in Mathematics, University of California, Irvine, June 2014
Courses Taught
Fall 2025
MATH 30: Calculus I, Claremont McKenna College, Instructor (3 Sessions)
Spring 2025
MATH 172: Abstract Algebra II: Galois Theory, Claremont McKenna College, Teaching Assistant, Grader
MATH 163: Quantum Computation, Claremont McKenna College, Grader
MATH 144: Algebraic Topology, Pitzer College, Grader
MATH 67: Vector Calculus, Pomona College, Grader
MATH 31: Calculus II, Claremont McKenna College, Grader
Fall 2024
MATH 389: Computation Topology (advanced topics course), Claremont Graduate University, Teaching Assistant, Grader
MATH 171: Abstract Algebra I, Claremont McKenna College, Teaching Assistant, Grader
MATH 55: Discrete Mathematics, Claremont McKenna College, Grader
MATH 31: Calculus II, Claremont McKenna College, Grader
Spring 2024
MATH 175: Number Theory, Claremont McKenna College, Teaching Assistant, Grader
MATH 31: Calculus II, Claremont McKenna College, Grader
Fall 2023
MATH 195: Coding Theory (advanced topics course), Claremont McKenna College, Teaching Assistant
MATH 140: Modern Geometry, Claremont McKenna College, Grader
MATH 31: Calculus II, Claremont McKenna College, Grader
Fall 2021
MATH 189B: Calculus of Variation and Optimization (advanced topics course), Pomona College, Grader