## Mathematicians Of The Day

### 1st December

On this day in 1729, the correspondence between Leonard Euler and Christian Goldbach began. For over 25 years they exchanged letters, 196 of which survive.

Click on Ⓟ for a poster.

##### Born:

- 1671: John Keill
- 1792: Nikolai Ivanovich Lobachevsky Ⓟ
- 1847: Christine Ladd-Franklin Ⓟ
- 1884: Francesco Cecioni Ⓟ
- 1892: A A Krishnaswami Ayyangar Ⓟ
- 1892: Félix Pollaczek Ⓟ
- 1948: Philippe Flajolet Ⓟ

##### Died:

- 1750: Johann Gabriel Doppelmayr Ⓟ
- 1937: Alfred Lodge
- 1942: Hildegard Ille Ⓟ
- 1947: G H Hardy Ⓟ
- 1959: Jur Hronec Ⓟ
- 1977: Kenneth May Ⓟ
- 1983: Leon Mirsky Ⓟ
- 2007: Leone Burton Ⓟ

#### Quotation of the day

##### From G H Hardy

No mathematician should ever allow him to forget that mathematics, more than any other art or science, is a young man's game. ... Galois died at twenty-one, Abel at twenty-seven, Ramanujan at thirty-three, Riemann at forty. There have been men who have done great work later; ... [but] I do not know of a single instance of a major mathematical advance initiated by a man past fifty. ... A mathematician may still be competent enough at sixty, but it is useless to expect him to have original ideas.