| Joseph Leonard Walsh | |
|---|---|
| Born | September 21, 1895 Washington, D. C. |
| Died | December 6, 1973 (aged 78) College Park, Maryland |
| Nationality | United States |
| Fields | Mathematics |
| Institutions | Harvard University |
| Alma mater | Harvard University |
| Doctoral advisor | Maxime Bôcher George David Birkhoff |
| Doctoral students | Joseph Leo Doob Maurice Heins Donald J. Newman Edward Saff Richard S. Varga |
| Known for | Walsh function Walsh code Walsh matrix |
Joseph Leonard Walsh, (September 21, 1895 – December 6, 1973) was an American mathematician. His work was mainly in the field of analysis.
For most of his professional career he studied and worked at Harvard University. He received a B.S. in 1916 and a PhD in 1920. The Advisor of his PhD was Maxime Bôcher. He started to work as lecturer in Harvard afterwards and became a full professor in 1935. With 2 different scholarships he was able to study in Paris under Paul Montel (1920-21) and in Munich under Constantin Carathéodory (1925-26) as well. From 1937 to 1942 he served as chairman of his department. During World War II he served as an officer in the US navy, was promoted to captain just after end of the war. After his retirement from Harvard in 1966 he accepted a position at the University of Maryland where he continued to work up to a few months before his death.
Joseph L. Walsh became a member of the National Academy of Sciences and served 1949-51 as president of the American Mathematical Society. Altogether he published 279 articles (research and others) and 7 books and advised 31 PhD students.