**Leonardo Pisano Bigollo** (c. 1170 â€“ c. 1250) also known as Leonardo of Pisa, Leonardo Pisano, Leonardo Bonacci, Leonardo Fibonacci, or, most commonly, simply **Fibonacci**, was an Italian mathematician, considered by some "the most talented western mathematician of the Middle Ages."

**Fibonacci** is best known to the modern world for the spreading of the Hindu-Arabic numeral system in Europe, primarily through the publication in the early 13th century of his Book of Calculation, the Liber Abaci; and for a number sequence named after him known as the Fibonacci numbers, which he did not discover but used as an example in the Liber Abaci. Wikipedia

See Also

**3.04 - Power Accumulation via Fibonacci-like Patterns**
**12.19 - Fibonacci Relationships**
**12.21 - Fibonacci Whole Numbers v Irrational Decimal near Equivalents**
**Fibonacci Relationships**
**Fibonacci Series**
**Fibonacci spiral**
**Figure 12.12 - Russells Multiple Octave Waves as Fibonacci Spirals**