NO SEMINAR ON DEC. 15 BUT SEMINAR ON DEC. 22 by David Lorenz. The Demeter Seminar meets in the fall quarter from 3.15-5 on Monday afternoon in 206 Egan Center. ============================================================ Talk by David Lorenz from the Technion in Israel. He will talk about his recent work which includes environmental acquisition and tilings of patterns. Abstract will be sent soon. -- Karl Lieberherr