Ludolph van Ceulen is read about 49 times a day, in 42 languages.
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Something wrong?A German-Dutch mathematician who spent much of his life computing pi by hand to 35 decimal places - a record that held for decades and earned the constant a name in his honor.
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Portret van Ludolph van Ceulen, RP-P-OB-15.347
Borstbeeld Ludolphus Keulen, Objectnr PV PV53228
Ceulen - De circulo & adscriptis liber, 1619 - BEIC 175795
Ludolf van Ceulen - Vanden circkel
Ludolf van Ceulen
Ludolphus A Collen matheseos belgicus profess. BSG EST97RES P3A
Ludolphus A Collen matheseos belgicus profess. BSG EST97RES P3B
Ludolphus A Collen matheseos belgicus profess. BSG EST97RES P3CIn their orbit
About this person
Born in Hildesheim on 28 January 1540, Ludolph van Ceulen devoted years to the painstaking calculation of the mathematical constant pi, using geometric methods to push accuracy far beyond what anyone had achieved before. His work yielded 35 digits, a feat so remarkable that pi became known in parts of Europe as the Ludolphine number. The achievement stood as a benchmark of human patience and precision until newer techniques eventually surpassed it. He died on 31 December 1610, having turned a single irrational number into a monument.
Academics from Germany 6
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