By Olaf Owe, Stein Krogdahl, Tom Lyche
After Ole-Johan’s retirement firstly of the hot millennium, a few of us had concept and spoke of creating a “Festschrift” in his honor. whilst Donald Knuth took the initiative through sending us the ?rst contribution, the p- cess started to roll! In early 2002 an modifying crew was once shaped, together with Kristen Nygaard, who had identified Ole-Johan when you consider that their scholar days, and with whom he had built the Simula language. Then we invited a couple of trendy researchers acquainted with Ole-Johan to put up contributions for a e-book hon- ing Ole-Johan at the social gathering of his seventieth birthday. Invitees integrated numerous contributors of the IFIP 2. three operating crew, a discussion board that Ole-Johan precious and enjoyedparticipating in throughouthis profession. regardless of the shortdeadline, the reaction to the invites used to be overwhelmingly optimistic. the unique inspiration used to be to accomplish the booklet relatively quick to make it a present he might learn and luxuriate in, simply because by way of then he had had melanoma for 3 years, and his healthiness used to be steadily deteriorating. Kristen have been on a regular basis traveling Ole-Johan,who was once within the hospitalat that point, and so they have been workingon their Turing award speech. Ole-Johan was once grati?ed to listen to in regards to the contributions to this e-book, yet modestly expressed the sensation that there has been no certain have to adopt a e-book undertaking on his behalf. Peacefully accepting his future, Ole- Johan died on June 29, 2002.