By Doron Zeilberger
Written: April 14, 2023
Also appeared in Vol. 57, No. 1, Issue 223, March 2023, of ACM Communication in Computer Algebra,
This tribute to Marko Petkovsek (April 9, 1955 - March 24, 2023 ) will hopefully be incorporated into a much longer article with numerous other contributions from friends and colleagues of Marko, coordinated by Sergei Abramov, and to be hopefully published in the ACM communications on Computer Algebra. It was solicited by its editor-in chief, Wen-shin Lee.