William E. Kaufman received his PhD from the University of Houston in 1979 under J. S. Mac Nerney. His primary areas of research are Hilbert space operator theory and the structure of Banach spaces. He worked on mathematical software for the first Space Shuttle at the Johnson Space Center. He is also interested in functional analysis in general, topological vector spaces, and is currently actively pursuing problems in the theory of nonseparable Banach spaces.