Justin Fong

Adjunct Professor

Part-Time Faculty

Biography

Justin Fong earned his Ph.D. in mathematics from Purdue University, and before that earned both a Master's and Bachelor's degree in math from San Francisco State University. He has returned to San Francisco to teach mathematics at USF as an adjunct lecturer. 

Expertise

  • Commutative algebra
  • F-singularities in positive characteristic
  • Combinatorics

Research Areas

  • Commutative algebra
  • F-singularities in positive characteristic
  • Combinatorics

Appointments

  • Part-Time Lecturer, Department of Mathematics (2026-present)

Education

  • PHD in Mathematics, Purdue University, 2025
  • MA in Mathematics, San Francisco State University, 2018
  • BA in Mathematics, San Francisco State University, 2016

Prior Experience

  • Graduate Teaching Assistant in Mathematics, Purdue University (2018-2025)
  • Graduate Teaching Assistant in Mathematics, San Francisco State University (2016-2018)

Selected Publications

  • F-pure threshold for the symmetric determinantal ring, Communications in Algebra, 54(5), 2280-2284 ,2026
  • Computing the F-pure threshold of flag varieties, Journal of Algebra, 687, 244–268 ,2026
  • The F-pure threshold of a Schubert cycle (with Mitsuhiro Miyazaki), Journal of Pure and Applied Algebra, 229(11) ,2025