Program Contact

College of Computing
Georgia Institute of Technology
Atlanta, GA 30332-0280

School of Industrial and Systems Engineering
Georgia Institute of Technology
Atlanta, GA 30332-0205

School of Mathematics
Georgia Institute of Technology
Atlanta, GA 30332-0160

Application Deadlines

Admission deadlines vary based on home unit

Admittance Terms



  • Ph.D., Algorithms, Combinatorics, and Optimization (ACO)

Areas of Research

Research areas being investigated by faculty of the ACO Program include such topics as:

  • Structural and topological graph theory
  • Coloring problems (including the Four Color Theorem)
  • Paths, cycles and flows in graphs
  • Probabilistic methods in combinatorics
  • Probability on graphs
  • Algebraic combinatorics
  • Computational algebra and geometry
  • Distributed computing
  • Algorithm complexity
  • Design and analysis of algorithms
  • Approximation algorithms
  • Algorithmic problems in coding theory
  • Fault-tolerant computing
  • Voting theory
  • Airline crew and fleet scheduling
  • Parallel computation
  • Interior point methods in mathematical optimization
  • Geometry of convex bodies
  • Machine learning theory
  • Other related areas

For more information, you may look at the personal Web pages of ACO affiliated faculty members.

Interdisciplinary Programs

Algorithms, Combinatorics, and Optimization (ACO) is offered by the College of Engineering through the Industrial and Systems Engineering Department, the College of Sciences through the Mathematics Department, and the College of Computing. To be considered for admission to ACO, a student must be admitted to the doctoral program in one of these units. Students must select a home school from one of the following disciplines:

For additional information about applying to the ACO program through one of these schools, please select from the list above.

Standardized Tests

IELTS Academic Requirements

  • Varies among home units.

TOEFL Requirements

  • Varies among home units.

GRE Requirements

  • Varies among home units.

Application Requirements

Application requirements vary based on home unit.


The Office of Graduate Education has prepared application instructions to help you navigate through the admissions process. View the instructions to begin your graduate education.