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math.GR2013
An infinitely generated virtual cohomology group for noncocompact arithmetic groups over function fields
Kevin Wortman
Let G be a noncocompact irreducible arithmetic group over a global function field K of characteristic p, and let H be a finite-index, residually p-finite subgroup of G. We show tha…
math.GR2013
Horospherical limit points of S-arithmetic groups
Dave Witte Morris, Kevin Wortman
Suppose Gamma is an S-arithmetic subgroup of a connected, semisimple algebraic group G over a global field Q (of any characteristic). It is well known that Gamma acts by isometries…