Welcome to the Cornell CS Theory Club!

We are a community of Cornell students passionate about theoretical computer science (TCS)! We hold weekly meetings to discuss anything that sparks curiosity and gets us thinking like theoretical computer scientists. Each semester, we host weekly talks by professors, graduate students, and undergraduates presenting cutting-edge research, motivating open problems, and sharing their personal academic journeys.

Come to any of our meetings! We warmly welcome anyone who is interested—undergraduate or graduate—from any area of study. Whether you're already doing research or curious about proofs, algorithms, and complexity, there's a place for you here.

Weekly Meeting Information

Wednesdays at 5:00 PM — CIS 373 (Bill & Melinda Gates Hall)

5:00 – 5:15 PM: Reception & Social (🍕 Free pizza provided!)
5:15 – 6:15 PM: Talk and Q&A

Join Our Mailing List: Send an email with subject line join to CS-THEORY-UGRAD-L-REQUEST@cornell.edu (Lyris instructions).

Cornell CS Theory Club Meeting in CIS 450
Cornell CS Theory Club members and attendees gathering in CIS 450

Topics We Explore

Theoretical computer science spans fundamental questions about computational power, limits, and efficiency:

Algorithms

Design, analysis, and limits of efficient algorithms and approximation schemes.

Complexity Theory

Understanding computational hardness, P vs NP, and structural complexity.

Cryptography

Lattice-based cryptography, zero-knowledge proofs, and secure computation.

Quantum Computing

Quantum algorithms, quantum error correction, and quantum complexity.

Learning Theory

Statistical and computational foundations of generalization and privacy.

Algorithmic Game Theory

Incentives, equilibria, mechanism design, and strategic behavior in networks.

Spring 2026 Talks Spotlight

We host talks every Wednesday during the semester. View the full semester schedule with all abstracts →

Noah Stephens-Davidowitz
Lattices in theoretical computer science and cryptography—some snippets from a >40-year history
Feb 25 Noah Stephens-Davidowitz (Cornell CS) View Abstract →
Robert Kleinberg
My adventures with binary search
March 4 Robert Kleinberg (Cornell CS) View Abstract →
Anke van Zuylen
Greedy, Randomized, and Clever: Approximation Algorithms for MAX-SAT
March 11 Anke van Zuylen (Cornell CS) View Abstract →

See All 10 Talks for Spring 2026 →

Leadership Team

The CS Theory Club is organized by undergraduate students with guidance from faculty in the Department of Computer Science. Learn more about the team →

Lawrence Ozoigbo

Lawrence Ozoigbo

Co-President

Nancy Chen

Nancy Chen

Co-President

Ahan Mishra

Ahan Mishra

Web Maintainer

Elizabeth Pfauth

Elizabeth Pfauth

Social Co-Chair, Web Maintainer

Prof. Éva Tardos

Prof. Éva Tardos

Faculty Advisor