Mathematicians Of The Day

4th August

On this day in 1539, Girolamo Cardan wrote to Niccolò Tartaglia in an attempt to understand why his calculations involving the square roots of negative numbers sometimes gave the correct answer. He said that his calculation was as subtle as it is useless.

On this day in 2014 Google released a Venn doodle.

Click on for a poster.

Quotation of the day

From William Rowan Hamilton
On earth there is nothing great but man; in man there is nothing great but mind.
Lectures on Metaphysics.