## Mathematicians Of The Day

### 13th April

Click on for a poster.

#### Quotation of the day

##### From Stan Ulam
To exist (in mathematics), said Henri Poincaré, is to be free from contradiction. But mere existence does not guarantee survival. To survive in mathematics requires a kind of vitality that cannot be described in purely logical terms.
Mark Kac and Stanislaw Ulam, Mathematics and Logic (1968)