Euclid's Book on Divisions of Figures

Euclid

Best known for the Elements, this ancient Greek mathematician shaped the way geometry was taught for more than two thousand years. Even though little is known for certain about his life, his clear, logical style made his work one of the most influential books in the history of mathematics.

Leonardo Fibonacci

Known as one of the great mathematicians of the Middle Ages, he helped introduce Hindu-Arabic numerals to Europe and wrote books that made arithmetic far more practical for merchants and scholars. He is also remembered for the number pattern that later took his name.

Best known for uncovering the mathematical riches of medieval Arabic manuscripts, this 19th-century scholar helped show how ideas like Hindu-Arabic numerals spread across cultures. His work connected the history of mathematics with close, careful study of original sources.