The best way to contact me for non-urgent matters is email: bandeira [at] math [dot] ethz [dot] ch
Due to volume, unfortunately, I cannot address most emails within the same day I receive them, if something requires my urgent attention please contact Annette Ryter (contact information) or Georg Anegg (contact information) , who can reach me. You can also try my office or phone (see here) or indicate that the message is urgent on the subject line.
While I try to address every email message within a week, due to volume, I unfortunately not always succeed. If you have written me, it has been over a week, and the subject still requires my attention, please write me again, and apologies in advance.
I sometimes only find time to send, or reply to, messages off-hours. Apologies in advance, and please kindly ignore my message until it is convenient to read it.
For Students at ETHZ: I try to hold regular office hours, see the schedule here. If you are interested in doing a semester paper or thesis take a look at this page.