A numerical study of eigenvalues of the hyperbolic Laplacian for polyhedra with one cusp.
Analytic properties of zeta functions and subgroup growth.
A Nonvanishing Theorem for the Cuspidal Cohomology of SL2 Over Imaginary Quadratic Integers.
Automorphism groups of polycyclic-by-finite groups and arithmetic groups
We show that the outer automorphism group of a polycyclic-by-finite group is an arithmetic group. This result follows from a detailed structural analysis of the automorphism groups of such groups. We use an extended version of the theory of the algebraic hull functor initiated by Mostow. We thus make applicable refined methods from the theory of algebraic and arithmetic groups. We also construct examples of polycyclic-by-finite groups which have an automorphism group which does not contain an arithmetic...
On symplectic groups over polynomial rings.
On the proof of Humbert's volume formula.
Zeta-Functions of Binary Hermitian Forms and Special Values of Eisenstein Series on Three-Dimensional Hyperbolic Space.
Residual Nilpotence in Polycyclic Groups.
Über einige rationale elliptische Kurven mit freiem Rang ... 8.
On congruence topologies in number fields.
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