Graham A. Jullien passed away peacefully at home on July 14, 2021 at the age of 78.

Graham was a professor of Electrical Engineering at the Universities of Windsor and Calgary. He had a very successful career and was made a member of the Royal Society of Canada. His love of engineering was equal to his love of music which gave him great joy.

Graham's work on somewhat exotic arithmetics has always attracted me.

I had the opportunity to invite him to Marseille, then to see him in Montpellier and to visit him in Calgary. He was a very interesting person with whom we could talk about all kinds of scientific and cultural topics. So when he retired, I wasn't surprised by his choice to devote himself to subjects other than his professional life.

I hope he had the opportunity to fulfill most of his plans.

Jean Claude Bajard