Aicher, Otl (1) Gray, Paul R. (university Of California, Hurst, Paul J. (university Of California, Lewis, Stephen H. (university Of California, Meyer, Robert G. (university Of California (1) Ryan, Mark (1) Zegarelli, M (1) Akcoglu, Mustafa A. (department Of Mathematics, Bartha, Paul F. A. (department Of Philosophy, Ha, Dzung Minh (department Of Mathematics (1)