MacTutor
10th June
On this day in 1854, Bernhard Riemann gave his habilitation lecture Über die Hypothesen welche der Geometrie zu Grunde liegen [On the hypotheses at the foundations of geometry], in which he defined what are now called Riemannian manifolds.
On this day in 2015 Google released an Abul-Wafa doodle.
The postage stamp of one of today's mathematicians at THIS LINK was issued in 1936.
On this day in 2015 Google released an Abul-Wafa doodle.
The postage stamp of one of today's mathematicians at THIS LINK was issued in 1936.