Mark Goresky

Abstract:   In 1981, J. Arthur described a formula for the trace of a Hecke correspondence on the L² cohomology of a locally symmetric space. At that time it was suggested by Arthur, Casselman, and Langlands, that there should be a topological interpretation of this formula as a Lefschetz fixed point formula. In this talk I will discuss the mathematics which resulted from attempts to interpret this formula geometrically.

Here are some directions to Northeastern University. Lake Hall and Nightingale Hall can be best accessed from the entrance on the corner of Greenleaf Street and Leon Street. The two halls are connected, with no well-defined boundary in between. In particular, 509 Lake Hall is on the same corridor as 544 Nightingale Hall.

There is free parking available for people coming to the Colloquium at Northeastern's visitor parking (Rennaisance Garage). The entrance is from Columbus Avenue. If coming by car, you should park there and take the parking talon. After the lecture, you may pick up the payment coupon from Maxim Braverman.