This the second of a 2 part series on the cohomology of the discrete group SLnZ - In the second talk, we’ll see the virtual cohomological dimension of SLnZ, and a duality result analogous to Poincaré duality, namely Borel-Serre duality, that helps compute higher dimensional cohomologies of SLnZ.
I will spend time recapping the setup from the last talk, so while attending the first one is helpful, it is not necessary.