Office hours are Philadelphia time, in McNeil 519 or by phone at +1 (215) 898-1507. I give priority to those physically present.
Known days when I am away, with no office hours, are posted here. Additional cancellations/modifications (if any) are listed immediately below.
Additional cancellations/modifications: There are no "official" office hours the week of March 10 (spring break), but I will be at Penn all week and happy to see anyone who wanders in randomly.