Carl Adam Petri
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Carl Adam Petri (b. July 12, 1926 in Leipzig) is a German mathematician and computer scientist. He invented the Petri net in 1962 as part of his dissertation titled: Kommunikation mit Automaten at University of Bonn. It significantly advanced the fields of parallel computing and distributed computing, helped define the modern studies of complex systems and workflow management. He officially retired in 1991. His contributions have been in the broader area of Net theory which includes coordination models and theories of interaction, and eventually led to the formal study of software connectors.
In 2003, he was honored by Her Majesty the Queen of the Netherlands with the title Commander in the Order of the Dutch Lion. Petri is also an Honorary Professor at the University of Hamburg.