Santa Cruz, California, 1979, where I co-taught a summer school. Edsger Dijkstra is leftmost; then Miren Carranza; Rod Burstall has his back to the camera; John Backus is looking between Rod and me. Photo by Chris Lengauer.
Pont-a-Mousson, France, 1983. L-R: Ole-Johan Dahl, Michel Sintzoff, me, Doug Ross, Tony Hoare, Jim Horning, John Guttag
Austin Texas, 1990. Edsger Dijkstra's 60th birthday party. He asked me to sit next to him at the head table. R-L: Edsger, me, David Gries, Anne Kaldewaij
Jeremy Gibbons with my daughter Amanda, at home 1993
Elora Mill, Ontario, 1994. L-R: Ric Holt, Marie Holt, me, Edsger Dijkstra, Ria Dijkstra
Tony Hoare and me, just outside my office in Toronto, 2004
Stirling Scotland, 2004. me with Greg Nelson
My first PhD student and still friend Chris Lengauer, his wife Jutta and their dog Yulius, Passau Germany, 2004
with Margaret, my postdocs Jenny Zheng and Wan Jianyi, and their husbands, 2006
with Yuri Gurevich and 3 of my graduate students Justin Ward, Albert Lai, Robert Will in Toronto 2007
at a research showcase in Toronto, 2012