• Institutiones Calculi Integralis writer
• Theoria motuum lunae writer
• 18th c. Swiss mathematician
• 18th-century mathematician
• 18th-century Swiss math great
• 18th-century Swiss mathematician
• A lunar crater
• Analytic geometry giant
• Author of Introduction to Algebra
• Basel-born mathematician
• Bernoulli collaborator
• Bernoulli contemporary
• Big name in math
• Blind mathematician born in Basel
• Calculus developer
• Calculus innovator Leonhard
• Calculus pioneer
• Calculus pioneer Leonhard
• Discoverer of the law of quadratic reciprocity
• Famed Swiss mathematician
• Formulator of the law of quadratic reciprocity
• Formulator of the quadratic reciprocity law
• Friend and colleague of Bernoulli
• Goldbach contemporary
• Great Swiss mathematician
• He introduced the symbol e for natural logs
• He wrote over 70 books on mathematics
• His formulas make you reel
• Integral calculus pioneer
• Introducer of the math symbol e
• Leonhard the mathematician
• Major name in analytic geometry
• Major name in mathematics
• Mathematician known as Analysis Incarnate
• Mathematician Leonhard
• Mathematician seen on a Swiss 10-franc note
• Mathematician who disproved Fermat's conjecture
• Mathematician who introduced the function symbol f(x)
• Mathematician who introduced the symbol e for the base of natural logarithms
• Mathematician who was blind for his last 17 years
• Mathematician whom Laplace described as 'our master in everything'
• Mathematician with a formula named after him
• Natural logarithm notation inventor
• Noted blind mathematician
• Noted student of Bernoulli
• Noted Swiss mathematician
• Noted Swiss mathematician: 1707-83
• Noted Swiss mathematician: 18th century
• Originator of the equation e to the power (pi * i) + 1 = 0
• Originator of the formula e^ix = cos x + i sin x
• Pioneer in calculus
• Pioneer in calculus notation
• Pioneer in integral calculus
• Pioneer in number theory
• Pioneer in pure mathematics
• Pioneer in the math of sudoku
• Pioneering mathematician
• Prolific writer on calculus
• Solver of the K
• Swiss calculus pioneer
• Swiss calculus pioneer Leonhard
• Swiss math giant
• Swiss math great
• Swiss math great who solved the K
• Swiss math whiz
• Swiss mathematician
• Swiss mathematician Leonard
• Swiss mathematician Leonhard who solved the K
• Swiss mathematician who introduced trig notations
• Swiss mathematician: 1707-83
• Swiss mathematician's ship described (5)
• Swiss mathematics pioneer
• Swiss who pioneered in graph theory
• Swiss mathematician (1707-1783)