## Mathematicians Of The Day

### 17th February

#### Quotation of the day

##### From Heinrich Tietze
The story was told that the young Dirichlet had as a constant companion all his travels, like a devout man with his prayer book, an old, worn copy of the Disquisitiones Arithmeticae of Gauss.
Quoted in G Simmons Calculus Gems (New York 1992).