People

Catalogued stars, predicted a planet beyond Uranus as well as the existence of dark stars, investigated Johann Kepler's problem of heliocentricity, and systematized the mathematical functions involved, which now bear his name.

Discusses this early Grecian's discoveries in finding a good approximation of the circumference of the earth, the tilt angle of our planet and a tool for finding prime numbers. Page includes biographical information.

Describes the mathematician's contribution to number theory and other findings and his introduction of letters from the Greek alphabet as symbols.

Biographical information on this Scottish protestant mathematician.