Contact Information

	Room 450F (Department Chair office) a href="directions.html">directions)
	Department of Computer Science Columbia University M/S 0401, 1214 Amsterdam Avenue New York, NY 10027-7003 United States
	Department of Computer Science Columbia University 450 Computer Science Building 500 West 120th Street New York, NY 10027-7003 USA phone: +1 212 939 7005
	+1 503 907-7004 (email-delivered, preferred) or +1 212 666 0140 (paper)
	office +1 212 939 7004 +1 732 292 3259 Department of Computer Science +1 212 939 7000 voice mail +1 212 981 4470 IRT lab +1 212 939 7040
	Visiting, directions, Office hours