Notes

Research 

A Regularized Semi-smooth Newton Method for Bilinear Saddle Point Problems [in preparation]
David Yang, Yuan Gao, Christian Kroer, Tianyi Lin 

Circle Packings from Tilings of the Plane [pdf]
Philip Rehwinkel, Ian Whitehead, David Yang, Mengyuan Yang (α - β).
Journal of Geometry, 2024

Quantum Grothendieck Polynomials in Partial Flags [in preparation]
Dave Anderson, Linda Chen, Zoe Markman, David Yang (α - β)

Teaching

At Columbia University, I was/am a

• Teaching Assistant for Operations Consulting (IEOR 4111), taught by Soulaymane Kachani (Fall 2025)

• Teaching Assistant for Analytics in Practice (IEOR 4524), taught by Yaren Bilge Kaya and Hardeep Johar (Spring 2025)

At Swarthmore College, I was a

• General Math Clinician, covering all math courses (Spring 2024)

• One-on-one Math Clinician, covering all math courses (Fall 2023, Spring 2024)

• first-ever Differential Equations (Math 43/44) Clinician (Spring 2023)

• Multivariable Calculus (Math 33/34/35) Clinician (Fall 2022)

• Algorithms (CS 41) Grader (Spring 2023)

• Number Theory (Math 58) Grader (Fall 2023)

• Honors Multivariable Calculus (Math 35) Grader (Spring 2021, Fall 2021)

I also worked (remotely) at the Art of Problem Solving (AoPS), where I was a

• Teaching Assistant for an Introduction to Counting & Probability (June - September 2021) and AMC 12 Problem Series (September - December 2021) class, among other substitute roles (2021 - 2022)

• Grader for assorted classes (2020–2022)

• "Halper"/Message Board Assistant (2020–2022)

Service & Organizations

• Columbia IEOR PhD Council: Vice President (2025-2026), Member (2024-2025)

Advocate for the interests of the PhD students, foster a strong and inclusive community, and organize events (tutorials, seminars, fitness challenges).

• Swarthmore Interactive Math Colloquium: Co-leader (2022 - 2024)

Organized interactive math lectures and community-building events, including 5 lectures and a Swarthmore Math/Stat Jeopardy event, to bring mathematics to the greater Swarthmore community.

• Swarthmore Advisory Council to the CS Department (ACCS): Class of 2024 Representative (2023 - 2024)

Served as liaison between the CS faculty and CS students. Led initiatives for improving inclusivity, diversity, and accessibility for the department. (2023-2024)

• Swarthmore Computer Science Mentorship Program: Mentor (2022-2023)

Fellowships & Selected Awards

• Lippincott Fellowship (2024)
  One of two recipients in the Swarthmore College graduating class. Awarded $7,500 to support my graduate studies.

• Heinrich W. Brinkmann Award (2024)
  Sole recipient. Awarded to "a set of graduating seniors who have demonstrated dedication to the field and to the Department of Mathematics and Statistics."