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5 See also
6 External links
Derrick Henry Lehmer born on 23th February 1905 in Berkeley, California, USA. His father was Derrick Norman Lehmer, a professor of Mathematics at the University of California, Berkeley and her mother was Clara Eunice Mitchell.
During his studies at Berkeley, Derrick Henry Lehmer met Emma Markovna Trotskaia, a female Russian student born in 1906, who was studying Engineering. Then she changed her major and earned a Bachelor degree in Mathematics from University of California at Berkeley in 1928. In the same year Derrick Henry Lehmer and Emma Markovna Trotskaia married and moved to Providence, Rhode Island, after Brown University offered instructorship to D. H. Lehmer.
He worked at Lehigh University from 1934 until 1940. For one year (1938-1939) the couple went to Cambridge, England on a Guggenheim Fellowship. The Lehmers had two children and they returned to USA by sea just before the beginning of the Battle of the Atlantic.
In 1940 Derrick Henry Lehmer accepted a position in the Mathematics Department of University of California at Berkeley. He continued working there until 1972, the year he became an emeritus professor.