Ryan B Hayward webpage

bio   teach   pubs   hexviz   selinger   research   talks   stuff   rain?   covid?   write   students  

professor emeritus computing science ualberta phd mcgill (cs 87) msc queen's (math 82) bsc queen's (hons math 81)

hex books

P vs NP game diff collatz? collatz

... deep things in science are not found because they are useful; they are found because it was possible to find them.   --Robert Oppenheimer

cyclists ... save cities money     ... and make roads safer     ... Hembrow's blog

first they came for the communists, but i was not a communist so i did not speak out. then they came for the socialists and the trade unionists, but i was neither, so i did not speak out. then they came for the jews, but i was not a jew so i did not speak out. and when they came for me, there was no one left to speak out for me.       dietrich bonhoeffer 1906 - 1945