Robert Sorgenfrey

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Robert Sorgenfrey
Born 1915
Died January 6, 1995
Alma mater UCLA
Doctoral advisor R.L. Moore

Robert Henry Sorgenfrey (1915 – January 6, 1995) was an American mathematician and Professor Emeritus of Mathematics at the University of California, Los Angeles.[1] 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.