## Mathematicians Of The Day

### 1st July

##### Born:

- 1646: Gottfried Leibniz (poster)
- 1788: Jean-Victor Poncelet (poster)
- 1840: Robert Ball (poster)
- 1906: Jean Dieudonné (poster)
- 1923: Herman Chernoff (poster)

##### Died:

- 1749: William Jones (poster)
- 1872: Fernando Pio Rosellini
- 1957: Donald McIntosh (poster)
- 1963: Bevan Braithwaite Baker
- 1983: R Buckminster Fuller (poster)
- 2015: Czesław Olech (poster)

#### Quotation of the day

##### From Jean Dieudonné

It is indubitable that a 50-year-old mathematician knows the mathematics he learned at 20 or 30, but has only notions, often rather vague, of the mathematics of his epoch, i.e. the period of time when he is 50.