Mathematician:Jacob Marcelis

Mathematician

Dutch soap merchant and amateur mathematician who gave an approximation to $\pi$ (pi): $3 + \dfrac {1 \, 008 \, 449 \, 087 \, 377 \, 541 \, 679 \, 894 \, 282 \, 184 \, 894} {6 \, 997 \, 183 \, 637 \, 540 \, 819 \, 440 \, 035 \, 239 \, 271 \, 702}$ which he mistakenly claimed was exact.

Nationality

Dutch

History

• Born: May 1637 in Amsterdam
• Died: ?

Publications

• 1698: Die quadratuur van den circkel, sijnde 't eerste en eenigste fondament
• 1699: Ampliate en demonstratie
• 1702: Eenvoudig vertoog
• 1704: Sleutel ende openinge van de quadrature
• 1714: Die eerste en eeningste uytvindinge van de circulquadratura

Sources

• 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $3 \cdotp 14159 \, 26535 \, 89793 \, 23846 \, 26433 \, 83279 \, 50288 \, 41972 \ldots$
• 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $3 \cdotp 14159 \, 26535 \, 89793 \, 23846 \, 26433 \, 83279 \, 50288 \, 41971 \ldots$