4th January

On this day in 1845, Giusto Bellavitis was appointed full professor of descriptive geometry at the University of Padua following a competitive examination. He held no degrees until the university awarded him an honorary doctorate in philosophy and mathematics the following year.

On this day in 2010 Google released a Newton doodle.

The postage stamp of one of today's mathematicians at THIS LINK was issued in 1957.