Quote of the day
A tragic irony of life is that we so often achieve success or financial independence after the chief reason for which we sought it has passed away.
Joan Birman

Born: May 30, 1927 (age 98)
Bio: Joan Sylvia Lyttle Birman is an American mathematician, specializing in braid theory and knot theory. Her book Braids, Links, and Mapping Class Groups has become a standard introduction, with many of today's researchers having learned the subject through it.






