The end of the twelfth and beginning of the thirteenth century would prove to be a new and innovative time period for mathematics in Europe. Arguably one of the most influential and salient mathematicians of the Middle Ages, Leonardo Pisano traveled the Medieval world, and brought his findings back to Europe. Pisano published his theories and discoveries, many of which would come to be foundations upon which later mathematicians would build their own theories. Pisano was an important historical figure, specifically in the area of mathematical advancement, whose discoveries would prove to be of use for centuries beyond his time. Born in Pisa, Italy around the year 1170, Leonardo Pisano was a man of many names (English). Throughout his life, he had several different last names used to refer to him, these include Pisano, which means of Pisa, Fibonacci, which means of the Bonacci family or son of Bonacci, and finally Bigollo, which means traveler and was most likely coined by himself (English). Pisano's father was a merchant who would…show more content… In this book, Pisano thoroughly explained the concept of the Hindu, or Arabic numeral system which operated on the numbers zero to nine, and is still used in modern times ("Fibonacci's Liber Abaci (Book of Calculation)"). This was the first introduction of this number system to the European population, and would impact mathematicians of the area immensely. Pisano also introduced the word "zephirum" which would later become the English word "zero"("Fibonacci's Liber Abaci (Book of Calculation)"). Another important topic discussed in this book was that of algorithms, processes to solve equations, which in modern times, is an extremely vital part of computer programming ("Fibonacci's Liber Abaci (Book of