Today is Georg Fredinand Ludwig Philipp Cantor's Birthday!
From the opening words of his great work
that gave birth to
a new field of mathematics:
Born: March 3, 1845
in St. Petersburg, Russia
Died: January 6, 1918
in Halle, Germany
"By a set we are to understand any
into a whole M of definite and distinguishable objects of our
or our thought. These objects are called the elements of M."