MacTutor
Mathematicians Of The Day
4th August
On this day in 1539, Girolamo Cardan wrote to Niccolò Tartaglia in an attempt to understand why his calculations involving the square roots of negative numbers sometimes gave the correct answer. He said that his calculation was as subtle as it is useless.
On this day in 2014 Google released a Venn doodle.
On this day in 2014 Google released a Venn doodle.
Click on Ⓟ for a poster.
Born:
- 1805: William Rowan Hamilton Ⓟ
- 1834: John Venn Ⓟ
- 1843: Mauritz Dahlin Ⓟ
- 1893: Francis Murnaghan Ⓟ
- 1909: Saunders Mac Lane Ⓟ
- 1912: Aleksandr Aleksandrov Ⓟ
- 1939: Brian Sleeman Ⓟ
Died:
- 1812: Georg Klügel Ⓟ
- 1874: Otto Hesse Ⓟ
- 1906: Joseph Tilly Ⓟ
- 1920: Karl Rohn Ⓟ
- 1945: Gerhard Gentzen Ⓟ
- 1967: Archibald Macintyre Ⓟ
- 2009: James Wiegold Ⓟ
Quotation of the day
From William Rowan Hamilton
On earth there is nothing great but man; in man there is nothing great but mind.
