Reinhold Baer

lived from 1902 to 1979

Baer's mathematical work was wide ranging; topology, abelian groups and geometry. His most important work, however, was in group theory, on the extension problem for groups, finiteness conditions, soluble and nilpotent groups.

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