## Mathematicians Of The Day

### 18th November

On this day in 1752, Christian Goldbach wrote to Euler conjecturing that any odd number could be written in the form $2n^2 + p$ where

*p*is prime. A counterexample was found in 1856.
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##### Born:

- 1844: Albert Wangerin Ⓟ
- 1872: Giovanni Vacca Ⓟ
- 1912: Shigeo Sasaki Ⓟ
- 1913: Alessandro Faedo Ⓟ
- 1916: David Bates Ⓟ
- 1924: Lucien Le Cam Ⓟ
- 1927: John Britton Ⓟ
- 1950: Gilles Pisier Ⓟ

##### Died:

- 1891: Joseph Wolstenholme Ⓟ
- 1919: Adolf Hurwitz Ⓟ
- 1933: Robert Scott Ⓟ
- 1945: Yakov Davydovich Tamarkin Ⓟ
- 1948: Arthur Hirsch Ⓟ
- 1959: Aleksandr Yakovlevich Khinchin Ⓟ
- 1962: Niels Bohr Ⓟ
- 1985: Henri Garnir Ⓟ
- 1994: Maurice Auslander Ⓟ
- 1994: Nathan Fine Ⓟ
- 2000: Lochlainn O'Raifeartaigh Ⓟ
- 2001: Lloyd Williams Ⓟ
- 2002: Edith Hirsch Luchins Ⓟ

#### Quotation of the day

##### From Niels Bohr

Every sentence I utter must be understood not as an affirmation, but as a question.