Biography:Philip Franklin
Philip Franklin | |
|---|---|
| Born | October 5, 1898 New York City , New York, US |
| Died | January 27, 1965 (aged 66) Belmont, Massachusetts, US |
| Known for | Franklin graph |
| Scientific career | |
| Doctoral advisor | Oswald Veblen |
| Doctoral students | Alan Perlis |
Philip Franklin (October 5, 1898 – January 27, 1965) was an American mathematician and professor whose work was primarily focused in analysis.
Dr. Franklin received a B.S. in 1918 from City College of New York (who later awarded him its Townsend Harris Medal for the alumnus who achieved notable postgraduate distinction). He received his M.A. in 1920 and Ph.D. in 1921 both from Princeton University. His dissertation, The Four Color Problem, was supervised by Oswald Veblen. After teaching for one year at Princeton and two years at Harvard University (as the Benjamin Peirce Instructor), Franklin joined the Massachusetts Institute of Technology Department of Mathematics, where he stayed until his 1964 retirement.
In 1922, Franklin gave the first proof that all planar graphs with at most 25 vertices can be four-colored.[1]
In 1928, Franklin gave the first description of an orthonormal basis for L²([0,1]) consisting of continuous functions (now known as "Franklin's system").[2]
In 1934, Franklin disproved the Heawood conjecture for the Klein bottle by showing that any map drawn on the Klein bottle can be coloured with at most six colours. An example which shows that six colours may be needed is the 12-vertex cubic graph now known as the Franklin graph.[3][4][5]
Franklin also worked with Jay W. Forrester on Project Whirlwind at the Office of Naval Research (ONR).
Franklin was editor of the MIT Journal of Mathematics and Physics from 1929.
In 1940 his comprehensive textbook A Treatise on Advanced Calculus was first published.
Franklin was married to Norbert Wiener's sister Constance. Their son-in-law is Václav E. Beneš.[6]
Books
- Franklin, Philip (1933). Differential equations for electrical engineers. New York: John Wiley & Sons.[7]
- Differential equations for engineers. Dover Publications. 1960.
- Franklin, Philip (1940). A treatise on advanced calculus. John Wiley & Sons.[8] 5th printing edition. 1955. Franklin, Philip (2016). Dover reprint. Courier Dover Publications. ISBN 978-0486807072.[9]
- Franklin, Philip (1941). The four color problem. OCLC 03049925.
- Franklin, Philip (1944). Methods of advanced calculus. ISBN 978-0070219007.
- Franklin, Philip (1949). Fourier methods. McGraw-Hill.
- An Introduction to Fourier Methods and the Laplace Transform. Dover Publications.
- Franklin, Philip (1953). Differential and integral calculus. McGraw-Hill.
- Franklin, Philip (1958). Functions of complex variables. Englewood Cliffs, New Jersey: Prentice Hall.[10] 2021 edition. Hassell Street Press. 9 September 2021. ISBN 978-1014075574.
- Franklin, Philip (1963). Compact calculus. McGraw-Hill. 2021 edition. Hassell Street Press. 9 September 2021. ISBN 978-1014263575.
References
- ↑ Franklin, P. "The Four Color Problem." Amer. J. Math. 44 (1922), 225-236. doi:10.2307/2370527
- ↑ Franklin, P. "A set of continuous orthogonal functions", Math. Ann. 100 (1928), 522-529. doi:10.1007/BF01448860
- ↑ Weisstein, Eric W.. "Franklin Graph". http://mathworld.wolfram.com/FranklinGraph.html.
- ↑ Weisstein, Eric W.. "Heawood conjecture". http://mathworld.wolfram.com/HeawoodConjecture.html.
- ↑ Franklin, P. "A Six Color Problem." J. Math. Phys. 13 (1934), 363-379. doi:10.1002/sapm1934131363
- ↑ "Philip Franklin - Biography". http://www-history.mcs.st-and.ac.uk/Biographies/Franklin.html.
- ↑ "Review of Differential equations for electrical engineers by Philip Franklin". Nature 132 (3347): 950. 1933. doi:10.1038/132950b0. Bibcode: 1933Natur.132R.950..
- ↑ Courant, Richard (1941). "Review of A Treatise on Advanced Calculus by Philip Franklin". Science 94 (2448): 518–519. doi:10.1126/science.94.2448.518.a. PMID 17809184.;
- ↑ Stenger, Allen (January 23, 2017). "Review of A Treatise on Advanced Calculus by Philip Franklin". https://www.maa.org/press/maa-reviews/a-treatise-on-advanced-calculus.
- ↑ Fuchs, W. H. J. (1959). "Book Review: Functions of complex variables". Bulletin of the American Mathematical Society 65 (5): 307–309. doi:10.1090/S0002-9904-1959-10330-X.
External links
- O'Connor, John J.; Robertson, Edmund F., "Philip Franklin", MacTutor History of Mathematics archive, University of St Andrews, http://www-history.mcs.st-andrews.ac.uk/Biographies/Franklin.html.
- Philip Franklin at the Mathematics Genealogy Project
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