Imagine winding the hour hand of a clock back from 3 o’clock to noon. Mathematicians have long known how to describe this rotation as a simple multiplication: A number representing the initial ...

THE first of these works is outwardly a very handsome A- volume, and on examination we find that the authors have also done their part in the most painstaking and methodical way. The main part of the ...

Today marks the birth anniversary of Augustus De Morgan, one of the most influential figures in the history of mathematics and logic. Born on June 27, 1806, in Madurai, India, De Morgan went on to ...