We will introduce combinatorial/discrete interpretations of the secant and tangent functions and explain how these can be used to provide bijective proofs of several standard trigonometric identities. We will also explore the connections between these interpretations and recent papers by Remmel and Pemantle/Wilf.
Graduate Student Combinatorics Seminar
Wednesday, October 7, 2009 - 12:30pm
Paul Levande
Univerisity of Pennsylvania