Modular symbols, class numbers, and the high-dimensional cohomology of SL_n(O_K)

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• Andy Putman, Rice
• Wednesday 15 October 2014, 16:00-17:00
• MR13.

If you have a question about this talk, please contact Ivan Smith.

Let O_K be the ring of integers in an algebraic number field K (for instance, O_K might be Z or the Gaussian integers Z[i]). I will discuss the relationship between the arithmetic properties of O_K and the high-dimensional cohomology groups of SL_n(O_K). This is joint work with Tom Church and Benson Farb.

This talk is part of the Differential Geometry and Topology Seminar series.

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