This meeting continues our Haskell lesson series with Echo delivering Lesson 3 on Recursion Patterns, Polymorphism, and the Prelude from Brent Yorgey's CIS194 course (http://www.seas.upenn.edu/~cis194/spring13/lectures.html).

Lyle will give an introduction to category theory, a theory about mathematical structures and their relationships, which has applications in functional programming.

The meeting will be at Collective Agency in the Tiffany Center - the same place as the February meeting. The elevator is expected to be restored to operation by then. (UPDATE: Elevator service to the 8th floor has not yet been restored, so you will have to walk from the 4th floor.) Someone will wait in the lobby to let you in as the front doors are locked after 6. The meeting is on the 8th floor.