Person: Widder, David
David Widder was an American mathematician who worked on integral transforms and partial differential equations.
Mathematical Profile (Excerpt):
 David Henry Widder, born in Montsera, Pennsylvania, was a railway mail clerk who died of myocarditis in Harrisburg.
 We note at this point that Freda B Widder graduated from the Central High School, Harrisburg, and the Pennsylvania Academy of Fine Arts.
 In this school he sat beside a student called Rusty who said that Harvard was the best university so Widder applied to Harvard, took the entrance examination, and was accepted to begin his studies in September 1916.
 Back at Harvard, Widder took courses on complex variable from William Caspar Graustein (18881941) who, like Widder, had been at the Aberdeen Proving Ground.
 Edward B Van Vleck from the University of Wisconsin was visiting Harvard for a term and also taught Widder who graduated in 1920.
 After his year abroad, Widder returned to Harvard for the beginning of the 192122 academic year.
 Widder was awarded his Ph.D. in 1924 for his thesis Theorems of mean value and trigonometric interpolation.
 After the award of his Ph.D., Widder was appointed to Bryn Mawr College where the head of mathematics was Anna Pell.
 At this time Widder was appointed so succeed her as head of mathematics.
 In 1930 Widder moved to Cambridge, Massachusetts, when he was given a joint appointment to Radcliffe College and Harvard University.
 Ada Comstock negotiated a new relationship between Radcliffe College and Harvard University in the 1940s and eventually Widder became a full professor at Harvard.
 Widder, in collaboration with Arthur Coble and Joseph Miller Thomas, became a founding managing editor of the Duke Mathematical Journal in 1935.
 Widder's book The Laplace Transform was published in 1941.
 Let us note at this point that David C Widder studied Mechanical Engineering at Northeastern University and Edith Widder studied biology at Tufts University.
 Widder attended many conferences, helped to organise some and made research visits.
 In addition to The Laplace transform (1941) which we mentioned above, Widder wrote several other important books.
Born 25 March 1898, Harrisburg, Pennsylvania, USA. Died 8 July 1990, Arlington, Massachusetts, USA.
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References
Adapted from other CC BYSA 4.0 Sources:
 Oâ€™Connor, John J; Robertson, Edmund F: MacTutor History of Mathematics Archive