location

center for theoretical physics, 8th floor pupin Hall
columbia university, new york city

pupin Hall is at the north side of campus by 120th st.

you may enter from campus, going through the gates on 116th st by the #1 subway station and walking north along the west side of campus (see map below).

you can also access pupin by entering the northwest corner building from the corner of 120th and broadway, turning left and going past the staircase to a door to the 2nd floor of pupin.