Fibonacci

About Fibonacci

Leonardo of Pisa, better known as Fibonacci (c. 1170–c. 1240), was a foundational medieval mathematician whose work was crucial in bringing Hindu-Arabic numeral system to European mathematics. His most lasting contribution is his 1202 book, Liber Abaci, which introduced the sequence of numbers that now bears his name-the Fibonacci sequence-and demonstrated the practical utility of the positional system (including zero) for arithmetic, commerce, and bookkeeping, fundamentally shifting European calculation methods away from the cumbersome Roman numerals. This influence secures his position at HPI Rank #119 among history's most important figures.

Despite this profound impact, Fibonacci's current internet attention suggests a notable gap. In 2025, his Wikipedia page garnered 367K views, placing his online visibility roughly on par with his historical importance (an attention gap of $\sim 1\text{x}$). However, for context among mathematicians, Ada Lovelace (HPI #208) captured $1.6\text{M}$ views, over four times Fibonacci's traffic, despite ranking significantly lower in overall historical influence. Conversely, medieval contemporaries like William the Conqueror ($\#934$) drew $3.0\text{M}$ views.

Looking closer at recent trends, the -15% momentum shift between Q1 and Q3 of 2025, coupled with a -0.3% year-over-year change, indicates that the modest attention Fibonacci currently commands is slowly but steadily declining in the online sphere.