Time and Place
I am available to meet any day and any time that is not already scheduled with another student. If you want to start learning about multilinear maps at 2 am on a Saturday, I'm willing!
You can find a calendar of my current appointments at the bottom of this page. It is kept fairly accurate and current, so this can give you a good sense of when I'm available, although keep in mind that I may need to include some travel time between appointments.
Meeting at Columbia University is often the most convenient. However, I can travel as much as 1 hour from Columbia to meet at your apartment, a cafe, library, or wherever else you may want to meet. This includes Manhattan, the Bronx, Queens, and Brooklyn.
I also offer online tutoring. I can use Skype, TeamViewer, and other internet applications.