David Widder

{{short description|American mathematician}}

{{Infobox scientist

| name = David Widder

| image =

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| birth_date = {{birth date|1898|03|25|df=y}}

| birth_place = Harrisburg, Pennsylvania, US

| death_date = {{death date and age|1990|07|08|1898|03|25|df=y}}

| death_place =

| nationality = American

| fields = Mathematics

| workplaces = Harvard University

| alma_mater = Harvard University

| doctoral_advisor = George D. Birkhoff

| doctoral_students = R. Creighton Buck
Ralph P. Boas, Jr.
Solomon W. Golomb
Deborah Tepper Haimo
I. I. Hirschman
Donald J. Newman
Harry Pitt
Harry Pollard

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David Vernon Widder (25 March 1898 – 8 July 1990) was an American mathematician. He earned his Ph.D. at Harvard University in 1924 under George Birkhoff and went on to join the faculty there.

He was a co-founder of the Duke Mathematical Journal and the author of the textbook Advanced Calculus (Prentice-Hall, 1947).{{cite web|title=Review of Advanced Calculus by David V. Widder|website=MAA Reviews, Mathematical Association of America|author=Stenger, Allen|date=September 16, 2015|url=https://www.maa.org/press/maa-reviews/advanced-calculus-2}} He wrote also The Laplace transform{{cite web|title=Review of The Laplace Transform by David Vernon Widder|website=MAA Reviews, Mathematical Association of America|author=Stenger, Allen|date=July 19, 2011|url=https://www.maa.org/press/maa-reviews/the-laplace-transform}} (in which he gave a first solution to Landau's problem on the Dirichlet eta function),{{cite book | last=Widder | first=D.V. | title=Laplace Transform (PMS-6) | publisher=Princeton University Press | series=Princeton Mathematical Series, No. 6 | year=2015 | isbn=978-1-4008-7645-7 | url=https://books.google.com/books?id=_iDWCgAAQBAJ }} (pbk reprint of 1941 1st edition) An introduction to transform theory,{{cite web|title=Review of An Introduction to Transform Theory by David V. Widder|website=MAA Reviews, Mathematical Association of America|author=Stenger, Allen|date=January 29, 2015|url=https://www.maa.org/press/maa-reviews/introduction-to-transform-theory}} and The convolution transform (co-author with I. I. Hirschman).