Inverse Problems and Torricelli's Law

Charles Groetsch, a native of New Orleans, is Professor of Mathematics at the University of Cincinnati. Except for a year at the University of Rhode Island, and shorter research appoint? ments in Canberra, Kaiserslautern, Manchester, and Zurich, he has been in Cincinnati since obtaining his Ph.D. from LSU in 1971. His research interests center on numerical analysis in abstract spaces, particularly the theory of approximate methods for ill-posed problems. When not thinking about mathematics and how to teach it, he likes to think a little about the hardest inverse problem?history.