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

Contacting the Mathematics Department

Due to the COVID-19 crisis, Mathematics Department operations and instruction are being performed via a mix of remote and in-person means.

The Math Department's main telephone lines, at (212) 650-5346 and 5347, are being answered by in office staff, Monday through Thursday, for the Fall 2021 semester and the foreseeable future. Hours of operation for all days are from 10AM - 6PM.

On Fridays however, the staff will continue to operate remotely. As a result, calls to the department should then be directed to the following telephone number, (929) 277-8821, which will generally be answered 9am-5pm.

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.

Contacting Advisors and Program Administrators

During January, advising will be handled online.

For questions concerning registration, e.g. possible overtallies, please email the Math Dept at math@ccny.cuny.edu. In addition to indicate your preferred sections(s) for the course you are looking for, please be sure to include your Empl ID and telephone number (for a quicker back and forth about available sections). Your email will be forwarded to an advisor. During the following periods you should be able to get a response within an hour:

  • Tuesdays Jan 11, 18, 25 from 10am to 3pm Akin
  • Wednesday, Thursday, Friday Jan 12 - 14 from 9:30 - 11:00am Steinberg
  • Tuesday, Wednesday, Thursday Jan25, 26, 29 from 11am to 1:00pm Auth.

For questions about changing a Major or Minor, you should get a response from the Assistant Chair, Prof. Joseph Bak, who advises undergraduate Mathematics majors. Prof Bak usually responds in a day or so.

The Administrators page lists administrators and advisors in the department together with some information about how to contact our administrators. This page can also be reached by clicking “Administation” on the menu at left.

Professors Hooper and Jorgenson are the Graduate Chairs, and run the Mathematics Master's program. It is best to contact them by writing to mathgradchair@ccny.cuny.edu.

Contacting instructors

Information about individual instructors is available on our People page.

Meet the Platonic Solids: Octahedron

blurb image

The Platonic solids have been known since antiquity, and they play a prominent role in Plato's description of the physical world. The planar faces of each solid are identical polygons. Only equilateral triangles, squares and regular pentagons appear.

Although the platonic solids seem to be purely geometric objects, they embody a number of deep algebraic features. Their symmetries, for example, relate to the solution of polynomial equations of low degree.

If you would like to learn more about Platonic solids, you can start here.