Markus Neuhauser

On the spectrum of lamplighter groups and percolation clusters

Let

Records on the vanishing of Fourier coefficients of powers of the Dedekind eta function

{\mathfrak{G}}

KAZHDAN CONSTANTS FOR COMPACT GROUPS

be a finitely generated group and X its Cayley graph with respect to a finite, symmetric generating set S. Furthermore, let

Horocyclic products of trees

{\mathfrak{H}}

Kazhdan's Property T for the Symplectic Group over a Ring

be a finite group and