Division of Science





Department of Mathematics
The City College of New York
160 Convent Avenue
New York, NY 10031

Phone: (212) 650-5346
Fax: (212) 650-6294


Due to the COVID-19 crisis, all Mathematics Department operations are being performed remotely, including instruction.

The main department telephone lines at (212) 650-5346,7 are being transferred to a personal phone outside the college and will be answered roughly between 11am and 7pm on Monday and Wednesday, and 9am to 5pm on Tuesday, Thursday, and Friday.

Preferably, email your concerns and questions to math@ccny.cuny.edu, which is also being monitored.

Staff members and administrators are either forwarding their telephone lines or monitoring their campus voicemail on a regular basis.

The Assistant Chair, Prof. Bak, and the Department Advisors for non-majors, Mr. Park and Mr. Turner, are holding regular online advising hours during which you can contact them in real time. The details can found on our Administration page which can be accessed via the left side bar or you can click here.

Instructor office hours are also being held remotely. You can either visit the individual instructor's page for details, or look at the master list which will appear soon by clicking here.

We hope everyone stays safe and healthy, and we look forward to seeing each other in person once again.

Dr. Emil L. Post

Emil Post

Emil L. Post was a City College alumnus and then returned after completing his Ph.D. from Columbia University to become faculty in 1936. His research contributed to various fields of mathematics including polyadic groups, recursively enumerable sets, degrees of unsolvability, and combinatorics. He is best known for his work in computability theory and mathematical models that are similar to the Turing machine model.

He graduated from City College (1917) with a B.S. in mathematics and received his Ph.D. from Columbia University (1920).