## Mathematicians Of The Day

### 30th April

On this day in 1807, Gauss wrote to Sophie Germain for the first time since being aware she was a woman, (She had formally written using the name Monsieur LeBlanc). In a letter with much praise, he writes:-

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

The scientific notes with which your letters are so richly filled have given me a thousand pleasures. I have studied them with attention and I admire the ease with which you penetrate all branches of arithmetic, and the wisdom with which you generalise and perfect.On this day in 2016 Google released a Shannon doodle and in 2018 they released a Gauss doodle.

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

Click on Ⓟ for a poster.

##### Born:

- 1773: Johann Karl Burckhardt Ⓟ
- 1777: Carl Friedrich Gauss Ⓟ
- 1861: John Clark
- 1875: Archibald Milne
- 1905: Serge Mikhalovich Nikolski Ⓟ
- 1911: Wolfgang Hahn Ⓟ
- 1916: Claude E Shannon Ⓟ
- 1933: Gilbert Baumslag Ⓟ

##### Died:

- 1704: Henry Coley Ⓟ
- 1959: Luigi Brusotti Ⓟ
- 1977: Charles Fox Ⓟ
- 1980: Stanisław Gołąb Ⓟ
- 1989: Gottfried Köthe Ⓟ
- 2011: Daniel Quillen Ⓟ
- 2012: Bruce Kellogg Ⓟ
- 2019: Manuela Garín Ⓟ

#### Quotation of the day

##### From Carl Friedrich Gauss

If others would but reflect on mathematical truths as deeply and continuously as I have, they would make my discoveries.