Alfred Tarski

Oskar Morgenstern and Kurt Gödel

Patras Logic Symposion 1980

Left to Right: Peter Aczel, Sol Feferman, Robin Gandy, John and Margaret Shepherdson, Gert Müller

Gödel-Symposium in Salzburg, July 1983

From Left to Right in the foreground: Stephen Kleene, John Dawson, Sol Feferman, Michael Beeson, Georg Kreisel (half turned), Karl Popper, Azriel Levy (turned), Dana Scott, Charles Parsons (half turned).

Dana Scott and Anita Burdman Feferman

With Willard Van Orman Quine in Boston, Aug. 1998 (for 20th World Congress of Philosophy)

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