clarke@csri.toronto.edu (Jim Clarke) (03/18/88)
(SF = Sandford Fleming Building, 10 King's College Road) (GB = Galbraith Building, 35 St. George Street) SUMMARY: HUMAN-COMPUTER INTERACTION SEMINAR, Friday, March 18, 3 p.m., SF1101 -- Joy Mountford: "Visual Metaphors for Navigating Large, Multi-Media Databases" GRAPHICS SEMINAR, Tuesday, March 22, 3 pm, GB120 -- Ken Musgrave: "Ray-tracing fractal mountains with rainbows" THEORY SEMINAR, Tuesday, March 22, 2-3 pm, SF1105 -- Philip Scott: "Functional Languages and Propositions as Types" ------------------------------ HUMAN-COMPUTER INTERACTION SEMINAR, Friday, March 18, 3 p.m., SF1101 Dr. Joy Mountford Apple Computer, Inc. "Visual Metaphors for Navigating Large, Multi-Media Databases" GRAPHICS SEMINAR, Tuesday, March 22, 3 pm, GB120 "Ray-tracing fractal mountains with rainbows" Mr. Ken Musgrave Yale University Ray-tracing fractal mountains, with rainbows: some new rendering tricks and algorithms. This talk will be about the techniques used to render fractal mountains for B.B. Mandelbrot at Yale University. Topics discussed will be representations of clouds, atmospheric haze and water, and texture mapping techniques for `mountain' surfaces. Novel algorithms for ray tracing both fractal mountains and rainbows will be discussed. And, best of all, some pretty pictures will be shown. THEORY SEMINAR, Tuesday, March 22, 2-3 pm, SF1105 Professor Philip Scott University of Ottawa "Functional Languages and Propositions as Types" In this talk we survey typed and polymorphically typed lambda calculi using the Curry-Howard isomorphism as a conceptual framework. Other functional languages, e.g. Martin-Lof type theory, fit into this viewpoint. Relation- ships with untyped lambda calculi will also be stressed. If time permits, we could discuss recent research, e.g. models of polymorphism (Girard domains, PER models), category theory, and/or Girard's Linear Logic. -- Jim Clarke -- Dept. of Computer Science, Univ. of Toronto, Canada M5S 1A4 (416) 978-4058 BITNET,CSNET: clarke@csri.toronto.edu CDNNET: clarke@csri.toronto.cdn UUCP: {allegra,cornell,decvax,linus,utzoo}!utcsri!clarke