BioPoem-Radon

Biopoem: =I was born in 1175 A.D. and lived in Pisa, Italy. My first name is Leonardo,= =although not many people know me by it. I travelled extensively; mostly by= =boat to places like Arabia and Africa. When I travelled, I collected= =mathematical and scientific information. When I returned from my= =travels, I introduced them to Europe. For example, I introduced the bar= =used for fractions. When thinking of my achievements, I think first of my= =many books. In "Liber Abbaci" I posed a famous problem about a= =hypothetical group of rabbits. Some of my other mathematical= =achievements are bringing zero to Europe, and a method for finding right triangles.= =Because of these many achievements, I am considered by many= =to be the "most talented mathematician of the Middle Ages".=