Once Phil invited me while I was visiting Montreal to his seminar in Ottawa to talk on MV-algebras, and I remember having on my short visit a long and interesting discussion on dinatural transformation, where I could appreciate the deepness of his mathematical thinking. Outside mathematics he made me pass a wonderful stay in Ottawa. I fully agree with Peter Hines who wrote to this thread "I and many others will remember him as one of the genuinely nicest people I have ever known." Eduardo Dubuc ---------- You're receiving this message because you're a member of the Categories mailing list group from Macquarie University. Leave group: https://outlook.office365.com/owa/categories@mq.edu.au/groupsubscription.ashx?source=EscalatedMessage&action=leave&GuestId=6bf90c14-94d1-45b7-a0b5-9dd447734d27