Stony Brook Math Day is a one-day festival for all undergraduate math majors. Come hear talks by Lisa Berger, Robert Hough, Joseph Mitchell, and Dennis Sullivan (recipient of the 2022 Abel Prize); take part in math-related activities; and connect with faculty and students over lunch and tea. This year's Math Day was on Monday, October 3. See below for directions to the event.

Financial support for travel is available. Registered participants will have lunch and tea provided. If you are planning to come, please take a moment and fill out the registration form below. If you have questions, you can contact the organizers by sending an email to

Here is the Math Day poster. Click on the image for a larger version.

Location and Schedule

The entire event took place at the Simons Center for Geometry and Physics. See below for directions to the center.

10:00 Official beginning

Simons Center Lobby

10:20 Welcome by Sasha Kirillov (department chair)

Simons Center, Room 102

10:30 Joseph Mitchell, Simple Paths and Cycles that Visit Disks and Polygons in the Plane (with activity)

Simons Center, Room 102

12:00 Lisa Berger, About your favorite math class

Simons Center, Room 102

13:00 Lunch and some interactive mathematics

Simons Center Lobby

14:30 Dennis Sullivan, Thurston's construction of embedded curves winding around three points in the plane (with activity)

Simons Center, Room 102

15:30 Tea time

Simons Center Lobby

16:30 Robert Hough, Puzzles and randomization in probability and physics

Simons Center, Room 102

17:30 Official ending

Simons Center Lobby

Here are the speakers. Lisa Berger, Robert Hough, and Dennis Sullivan are professors in the department of mathematics; Joseph Mitchell is a professor in the department of applied mathematics and statistics.

The exhibition Ways of Making Things will also be open during the day; it features artwork by Moira Chas, Johnathan Hopp, and LoVid that combines mathematics and design in novel ways. Professor Moira Chas will be around, so chat with her if you are interested.


If you are interested in coming to this year's Math Day, please register for the event. This will help us plan for lunch and tea time. We contacted everyone on September 26 to reconfirm their registration.

Directions and Parking

Directions: The event will take place at the Simons Center for Geometry and Physics. Please click here for directions to the center (by car, train, etc.)

Trains: You can take the LIRR to Stony Brook (on the Port Jefferson branch) or to Ronkonkoma (on the Ronkonkoma branch). Here are the most convenient trains:

Port Jefferson Branch Penn Station 7:47am Stony Brook 9:40am
Ronkonkoma Branch Penn Station 8:14am Ronkonkoma 9:37am

The Stony Brook station is right on campus. We are going to offer a shuttle bus from the Ronkonkoma station to the Simons Center. If you are planning to come this way, please let us know through the registration form.