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ROMA – To the mathematician who had solved a puzzle not codified for seventeen years, the University of Palermo has given back a teaching course. It took a whole season, and a change of rector, to bring back to the chair Francesco Tulone50, an entire academic career within the university with refinements at Lomonosov University in Moscow and Austin, Texas, where for seven years he taught a contemporary talent of the discipline such as Alessio Figalli.