c. 947-1004

French scholar who commented on ancient computation tables in his De numero et pondere super calculum victorii (c. 1000). A monk at the abbey in Fleury, Abbo taught in England before returning to Fleury to become abbot in 988. He also served as a diplomat in the service of France's King Robert II. In addition to his mathematical work, Abbo wrote on astronomy, philosophy, and grammar.