This is the contact webpage for Eduardo Sontag. Welcome!

If possible, please do not send attachments with emails. A far far better method is to deposit your file in google docs (= google drive) and "share" it with me (and other receipients). This results in far less waste of disk space, and, at least for people using gdocs, keeps documents neatly organized.

For sharing, please use, where S is my last name, and not the address used for emails.

E-mail is by far the preferred means of communication. Please use: where "E.S" means "eduardo.sontag" (sorry, I have to write it this way in order to avoid automatic "harvesting" by spam-list makers)

Please do not use my rutgers addresses that you can find in various places. Rutgers has made a mess of their email system, and email has become very unreliable. I prefer gmail.

My math office is at: Hill Center (click for map; zoom out as needed),
    Room 724, Busch Campus, Rutgers University, Piscataway, NJ.

General site for directions and campus maps from the university.

PHONE: (+1 if from another country) 848 followed by 445 followed by 6917

For mailing purposes, the following address should be used:

Eduardo D. Sontag
Department of Mathematics, Hill Center, 110 Frelinghuysen Rd
Rutgers, The State University of New Jersey
Piscataway, NJ 08854-8019, USA

Uber/Lyft/etc address (Hill Center bus stop, photo shows location and Hill Center in background):

110 Frelinghuysen Rd Piscataway, NJ 08854-8019

Visitor Parking and Hill Center information:

GPS coordinates of Hill Center: 40.521983, -74.462832

There is free guest parking at Rutgers, see: free guest parking information and specifically: lot 48 location

GPS coordinates of guest parking lot: 40.515034, -74.460594
Here is a map showing the relative locations of the guest parking lot and Hill Center (you can walk, but there are also campus buses; ask at the information office about the latter).

Suggested place for visitors to stay, especially if they have a car (ask for cheap Rutgers rate!):
Extended Stays Piscataway, 410 S. Randolphville Road, Piscataway, NJ 08854, (732) 235-1000,
Map and directions for driving from hotel to Hill Center

Rutgers campus buses: