Mathematicians Of The Day

29th September

On this day in 1801, Gauss's Disquisitiones Arithmeticae was published. Gauss was only 24 years old at that time and had written it when he was 21.

Click on for a poster.

Quotation of the day

From Adriaan van Roomen
Surely there is a certain science common to arithmetic and geometry to which properties common to all quantities pertain: since a proportion is common to all quantities, not only abstract ones such as numbers and magnitudes, but also concrete ones such as times, sounds, voices, places, motions, and forces (for all these and many others are said to have a proportion if their relation is considered from the viewpoint of quantity).