University of Georgia
Mathematics Department Colloquium
Dmitry Jakobson
California Institute of Technology
January 19, 1999
Spectral gaps for subgroups of SU(2)
Abstract: We present a new method for constructing subgroups of SU(2)
with the spectral gap. This provides an elementary solution of the
Ruziewicz problem, and gives many new examples of subgroups with the
spectral gap.