## Mathematicians Of The Day

### 7th July

Click on Ⓟ for a poster.

##### Born:

- 1816: Rudolf Wolf Ⓟ
- 1845: Eduard Gubler Ⓟ
- 1883: Margaret Barr Moir
- 1888: Archibald Goldie
- 1901: Mary Simpson Ⓟ
- 1905: Marie-Louise Dubreil-Jacotin Ⓟ
- 1906: William Feller Ⓟ
- 1906: Gheorghe Mihoc Ⓟ
- 1922: Vladimir Aleksandrovich Marchenko Ⓟ

##### Died:

- 1900: Eduard Wiltheiss Ⓟ
- 1922: Jacques Bertillon Ⓟ
- 1927: Gösta Mittag-Leffler Ⓟ
- 1942: William Young Ⓟ
- 1967: Anatoly Malcev Ⓟ
- 1975: William Hodge Ⓟ
- 1982: Raymond Wilder Ⓟ
- 2014: Lars Gårding Ⓟ
- 2017: Marina Ratner Ⓟ

#### Quotation of the day

##### From William Feller

Probability is a mathematical discipline whose aims are akin to those, for example, of geometry of analytical mechanics. In each field we must carefully distinguish three aspects of the theory:

(a) the formal logical content,

(b) the intuitive background,

(c) the applications.

The character, and the charm, of the whole structure cannot be appreciated without considering all three aspects in their proper relation.