Mathematician:Ludolph van Ceulen

German-Dutch mathematician who calculated the value of $\pi$ to $35$ decimal places.

This expression was engraved upon his gravestone and known as the Ludolphine number:

Nationality
Dutch, of German origin

History

 * Born: 28th January 1540 in Hildesheim, Bishopric of Hildesheim, Holy Roman Empire
 * Died: 31 December 1610 in Leiden, Dutch Republic

Theorems

 * Ludolphine number

Books and Papers

 * 1596: Van den Circkel ("On the Circle")