## Mathematicians Of The Day

### 11th November

On this day in 1675, Gottfried Wilhelm Leibniz first introduced the symbols

See THIS LINK.

*dx, dy*and $\large\frac {dx } {dy}$.See THIS LINK.

Click on Ⓟ for a poster.

##### Born:

- 1701: Anders Celsius Ⓟ
- 1729: Louis-Antoine de Bougainville Ⓟ
- 1851: Jacques Bertillon Ⓟ
- 1904: Henry Whitehead Ⓟ
- 1905: Sigekatu Kuroda Ⓟ
- 1911: Caleb Gattegno Ⓟ
- 1911: Enzo Martinelli Ⓟ

##### Died:

- 1933: Mineo Chini
- 1954: Horatio Carslaw Ⓟ
- 1957: Ugo Amaldi Ⓟ
- 1967: Lester R Ford Ⓟ
- 1985: Mary Simpson Ⓟ
- 1992: Alfonso Gándara Ⓟ
- 1997: Menahem Schiffer Ⓟ
- 2003: Andrei Andreevich Bolibrukh Ⓟ

#### Quotation of the day

##### From Henry Whitehead

The British Mathematical Colloquium consists of three days of mathematics with no dogs and no wives.