Robert Sorgenfrey

Robert Sorgenfrey
Born	(1915-08-14)August 14, 1915 Sunbury, Iowa
Died	January 7, 1996(1996-01-07) (aged 80) Los Angeles, California
Alma mater	University of Texas at Austin (PhD) University of California, Los Angeles (undergrad)
Scientific career
Fields	general topology
Workplaces	University of California, Los Angeles
Thesis	Concerning Triodic Continua  (1941)
Doctoral advisor	R.L. Moore

Robert Henry Sorgenfrey (August 14, 1915 – January 7, 1996) was an American mathematician and Professor of Mathematics at the University of California, Los Angeles at UCLA until his retirement in 1979. The Sorgenfrey line and the Sorgenfrey plane are named after him; the Sorgenfrey line was the first example of a normal topological space whose product with itself is not normal.