Carnegie Mellon University

John Mackey

Teaching Professor

7130 Wean Hall
Department of Mathematical Sciences
Carnegie Mellon University
5000 Forbes Avenue
Pittsburgh, PA 15213

P: 412-268-6881


John Mackey


Ph.D., University of Hawaii


I like to hunt for elusive mathematical objects having special properties. For example, assuming that every pair of people are either acquaintances or strangers, it is not known whether it is possible to have a party of 43 people at which no five people are mutual acquaintances and no five people are mutual strangers. It may be fun for you to construct the largest conceivable party at which no three people are mutual acquaintances and no three people are mutual strangers.

My primary activities in the department are teaching, advising first and second year students, serving on curriculum and education committees, helping to make class schedules and orient teachers, mentoring math club and various other campus groups, hosting and reaching out to prospective students and their parents and reviewing transfer credit requests. I am a co-PI on the recent NSF Debt-M grant to help Pittsburgh Public School Students close the opportunity gap faced in their pursuit of mathematics.

Select Publications

Komarov, N., Mackey, J. (2017). On the Number of 5-Cycles in a Tournament. Journal of Graph Theory, 86 (3), 341-356.

Lavrov, M., Lee, M., Mackey, J. (2014). Improved upper and lower bounds on a geometric Ramsey problem. European Journal of Combinatorics, 42, 135-144.

Mackey, J. (2002). A cube tiling of dimension eight with no facesharing. Discrete and Computational Geometry, 28 (2), 275-279.

Mackey, J. (1996). A lower bound for groupies in graphs. Journal of Graph Theory, 21 (3), 323-326.

Google Scholar Citation List