MacTutor
Mathematicians Of The Day
20th April
On this day in 1543, Copernicus's work De revolutionibus orbium coelestium was published when Rheticus autographed a presentation copy of the completed work. Copernicus died a month later.
On this day in 2009 Google released a Zu Chongzhi doodle.
A (personally designed) stamp of one of today's mathematicians is at THIS LINK.
On this day in 2009 Google released a Zu Chongzhi doodle.
A (personally designed) stamp of one of today's mathematicians is at THIS LINK.
Click on Ⓟ for a poster.
Born:
- 1644: Heinrich Meissner Ⓟ
- 1814: Fernando Pio Rosellini
- 1839: Francesco Siacci Ⓟ
- 1865: David Tweedie
- 1882: André Sainte-Laguë Ⓟ
- 1898: Edwin Olds
- 1910: Ernst Mohr Ⓟ
- 1940: George Oster Ⓟ
Died:
- 1344: Levi ben Gerson Ⓟ
- 1932: Giuseppe Peano Ⓟ
- 1942: Ludwig Berwald Ⓟ
- 1957: Konrad Knopp Ⓟ
- 1992: Harry Reuter Ⓟ
- 1994: Naum Il'ich Feldman Ⓟ
- 2001: David Gilbarg Ⓟ
- 2006: Kathleen McNulty Antonelli Ⓟ
- 2006: Paul Cohn Ⓟ
Quotation of the day
From Levi ben Gerson
Because the true perfection of a practical occupation consists not only in knowing the actual performance of the occupation but also in its explanation, why the work is done a in a particular way, and because the art of calculating is a practical occupation, it is clear that it is pertinent to concern oneself with the theory.
