THE AMAZING NUMBER Π PETER BORWEIN Abstract. This text accompanies an address given at the celebration to re- place the lost to
Tombstone. The tombstone of Ludolph van Ceulen in Leiden, the Netherlands, is engraved with his amazing 35-digit approximation t
Tombstone. The tombstone of Ludolph van Ceulen in Leiden, the Netherlands, is engraved with his amazing 35-digit approximation t
![Fermat's Library on Twitter: "Ludolph van Ceulen, using Archimedes' methods, approximated the circle with a regular polygon which had 2⁶² sides. It took 25 years of hand calculations to produce a 35 Fermat's Library on Twitter: "Ludolph van Ceulen, using Archimedes' methods, approximated the circle with a regular polygon which had 2⁶² sides. It took 25 years of hand calculations to produce a 35](https://pbs.twimg.com/media/Dg3CuQlVQAAQH1j.jpg)