Compact perturbations of Fredholm n-tuples postscript version , pdf version
Compact perturbations of Fredholm n-tuples, II, postscript version,pdf version
Rings with topologies induced by spaces of functions postscript version, pdf version
Topological Hilbert Nullstellensatz for Bergman spaces postscript version, pdf version
Skein modules and the noncommutative torus, joint with Charles Frohman, postscript version, pdf version. Although this is rather a topology paper, certain aspects of it might be interesting for operator theorists.