Hanna Neumann
was born 103 years ago
12th February 1914

Hanna Neumann worked in group theory. Her thesis examined free products with amalgamation. Later she worked on varieties of groups and her book Varieties of Groups (1967) is a classic.

Find out more at:
http://www-history.mcs.st-andrews.ac.uk/Mathematicians/Neumann_Hanna.html