NOTE (3/8/13): "Reduced products of UHF algebras" was previously titled "Automorphisms of a corona algebra". Substantial revisions have been made.
Reduced products of UHF algebras, submitted.
Homeomorphisms of Cech-Stone remainders: the zero-dimensional case, with Ilijas Farah, submitted.
Some Calkin algebras have outer automorphisms, with Ilijas Farah and Ernest Schimmerling, to appear in the Archive for Mathematical Logic.