## Mathematicians Of The Day

### 1st April

On this day in 1975, Martin Gardner published an April's Fool hoax in

The postage stamp of one of today's mathematicians at THIS LINK was issued in 2016.

*Scientific American*which claimed that Ramanujan had conjectured in a 1914 paper that $e^{\pi \sqrt{163}}$ is an integer. In fact it is 262 537 412 640 768 743.9999999999992500 ...The postage stamp of one of today's mathematicians at THIS LINK was issued in 2016.

Click on Ⓟ for a poster.

##### Born:

- 1617: Seth Ward Ⓟ
- 1640: Georg Mohr
- 1776: Sophie Germain Ⓟ
- 1801: Henry Perigal Ⓟ
- 1835: James Moriarty Ⓟ
- 1874: Ernest William Barnes Ⓟ
- 1879: Antoni Hoborski Ⓟ
- 1895: Alec Aitken Ⓟ
- 1916: Sheila Edmonds Ⓟ
- 1935: Bronius Grigelionis Ⓟ
- 1947: Alain Connes Ⓟ

##### Died:

- 1863: Jakob Steiner Ⓟ
- 1872: Martin Ohm Ⓟ
- 1921: Carl Johannes Thomae Ⓟ
- 1930: George Gibson Ⓟ
- 1968: Lev Landau Ⓟ
- 1998: Mary Warner Ⓟ
- 2003: Adriaan Cornelis Zaanen Ⓟ

#### Quotation of the day

##### From Lev Landau

Cosmologists are often wrong, but never in doubt.