13th century in literature
This article is a list of literary events and publications in the 13th century. == Events == 1202 – Leonardo Fibonacci writes Liber Abaci, about the modus Indorum, the Hindu–Arabic numeral system, including the use of zero; it is the first major work in Europe to move away from the use of Roman numerals.
Source: Wikipedia — 13th century in literature (CC BY-SA 4.0)