Leonhard Euler, one of the mathematical giants of the 18th century.

Marquis de L'Hospital, the author of the first calculus text.

Zeno of Elea, the poser of the paradoxes of the infinite.

Jean Le Rond d'Alembert, discoverer of the ratio test.

Brook Taylor, discoverer of Taylor polynomials and Taylor's series.

Colin Maclaurin, who did more than let *a* = 0!

Augustin Louis Cauchy, one of the 19th-century giants of calcuolus.

Joseph-Louis Lagrange, discoverer of the remainder estimate for power series.