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H. C. Marston Morse
Morse in 1965 (courtesy MFO)
Born	(1892-03-24)March 24, 1892 Waterville, Maine, U.S.
Died	June 22, 1977(1977-06-22) (aged 85) Princeton, New Jersey, U.S.
Nationality	American
Alma mater	Colby College Harvard University
Known for	Morse theory
Awards	Bôcher Memorial Prize (1933) National Medal of Science (1964)
Scientific career
Fields	Mathematics
Institutions	Cornell University Brown University Harvard University Institute for Advanced Study
Thesis	Certain Types of Geodesic Motion of a Surface of Negative Curvature  (1917)
Doctoral advisor	George David Birkhoff
Doctoral students	Emilio Baiada Nancy Cole Gustav Hedlund Sumner Myers Everett Pitcher Arthur Sard

Harold Calvin Marston Morse (March 24, 1892 – June 22, 1977) was an American mathematician best known for his work on the calculus of variations in the large, a subject where he introduced the technique of differential topology now known as Morse theory. The Morse–Palais lemma, one of the key results in Morse theory, is named after him, as is the Thue–Morse sequence, an infinite binary sequence with many applications.

He was elected to the American Academy of Arts and Sciences in 1929, the United States National Academy of Sciences in 1932, and the American Philosophical Society in 1936. In 1933 he was awarded the Bôcher Memorial Prize for his work in mathematical analysis. J. Robert Oppenheimer described Morse as "almost a statesman of mathematics."

Biography

He was born in Waterville, Maine to Ella Phoebe Marston and Howard Calvin Morse in 1892. He received his bachelor's degree from Colby College (also in Waterville) in 1914. At Harvard University, he received both his master's degree in 1915 and his PhD in 1917. He wrote his PhD thesis, Certain Types of Geodesic Motion of a Surface of Negative Curvature, under the direction of George David Birkhoff.

Morse was a Benjamin Peirce Instructor at Harvard in 1919–1920, after which he served as an assistant professor at Cornell University from 1920 to 1925 and at Brown University in 1925–1926. He returned to Harvard in 1926, advancing to professor in 1929, and teaching there until 1935. That year, he accepted a position at the Institute for Advanced Study in Princeton, where he remained until his retirement in 1962.

He spent most of his career on a single subject, now known as Morse theory, a branch of differential topology that enables one to analyze the topology of a smooth manifold by studying differentiable functions on that manifold. Morse originally applied his theory to geodesics (critical points of the energy functional on paths); these techniques were used in Raoul Bott's proof of his periodicity theorem. Morse theory is a very important subject in modern mathematical physics, such as string theory.

He died on June 22, 1977, at his home in Princeton, New Jersey. His second wife, Louise Jeffreys, died in 2016.

Marston Morse should not be confused with either his 5th cousin twice removed Samuel Morse, famous for Morse code, nor Anthony Morse, famous for the Morse–Sard theorem.

Selected publications

Articles

• Morse, Harold Marston (1924). "A fundamental class of geodesics on any closed surface of genus greater than one". Trans. Amer. Math. Soc. 26 (1): 25–60. doi:10.1090/s0002-9947-1924-1501263-9. MR 1501263.
• Morse, Marston (1928). "The foundations of a theory in the calculus of variations in the large". Trans. Amer. Math. Soc. 30 (2): 213–274. doi:10.1090/s0002-9947-1928-1501428-x. MR 1501428.
• Morse, M. (1928). "Singular points of vector fields under general boundary conditions". Proc Natl Acad Sci U S A. 14 (5): 428–430. Bibcode:1928PNAS...14..428M. doi:10.1073/pnas.14.5.428. PMC 1085532. PMID 16577120.
• Morse, Marston (1929). "The critical points of functions and the calculus of variations in the large". Bull. Amer. Math. Soc. 35 (1): 38–54. doi:10.1090/s0002-9904-1929-04690-1. MR 1561686.
• "The foundations of the calculus of variations in the large in m-space (first paper)". Trans. Amer. Math. Soc. 31 (3): 379–404. 1929. doi:10.1090/s0002-9947-1929-1501489-9. MR 1501489.
• Morse, M. (1929). "Closed extremals". Proc Natl Acad Sci U S A. 15 (11): 856–859. Bibcode:1929PNAS...15..856M. doi:10.1073/pnas.15.11.856. PMC 522574. PMID 16577255.
• "The foundations of a theory of the calculus of variations in the large in m-space (second paper)". Trans. Amer. Math. Soc. 32 (4): 599–631. 1930. doi:10.1090/s0002-9947-1930-1501555-6. MR 1501555.
• Morse, Marston (1931). "The critical points of a function of n variables". Trans. Amer. Math. Soc. 33 (1): 72–91. doi:10.1090/s0002-9947-1931-1501576-4. MR 1501576. PMC 526733. PMID 16577308.
• Morse, Marston (1935). "Sufficient conditions in the problem of Lagrange without assumptions of normalcy". Trans. Amer. Math. Soc. 37 (1): 147–160. doi:10.1090/s0002-9947-1935-1501780-9. MR 1501780.
• Morse, Marston; Leighton, Walter (1936). "Singular quadratic functions". Trans. Amer. Math. Soc. 40 (2): 252–288. doi:10.1090/s0002-9947-1936-1501873-7. MR 1501873.
• Morse, Marston; Hedlund, Gustav A. (1942). "Manifolds without conjugate points". Trans. Amer. Math. Soc. 51 (2): 362–386. doi:10.1090/s0002-9947-1942-0006479-x. MR 0006479.
• Morse, M. (1952). "Homology relations on regular orientable manifolds". Proc Natl Acad Sci U S A. 38 (3): 247–258. Bibcode:1952PNAS...38..247M. doi:10.1073/pnas.38.3.247. PMC 1063540. PMID 16589087.

Books

• Calculus of variations in the large, American Mathematical Society, 1934
• Topological methods in the theory of functions of a complex variable, Princeton University Press, 1947
• Lectures on analysis in the large, 1947
• Symbolic dynamics, Mimeographed notes by R. Oldenberger. Princeton, NJ: Institute for Advanced Study. 1966.
• with Stewart Cairns: Critical point theory in global analysis and differential topology, Academic Press, 1969
• Variational analysis: critical extremals and Sturmian extensions, Wiley, 1973; 2nd edn. Dover, 2007{{citation}}: CS1 maint: postscript (link)
• Global variational analysis: Weierstrass integrals on a Riemannian manifold, Princeton University Press, 1976
• Morse, Marston (1981), Bott, Raoul (ed.), Selected papers, Berlin, New York: Springer-Verlag, ISBN 978-0-387-90532-7, MR 0635124
• Morse, Marston (1987), Montgomery, Deane; Bott, Raoul (eds.), Collected papers. Vol. 1--6, Singapore: World Scientific Publishing Co., ISBN 978-9971-978-94-5, MR 0889255

Film

• "Pits, Peaks, and Passes: A Lecture on Critical Point Theory", Mathematical Association of America Lecture Films, 1966

Notes

1. "Marston Morse". American Academy of Arts & Sciences. February 9, 2023. Retrieved June 1, 2023.
2. "H. Marston Morse". www.nasonline.org. Retrieved June 1, 2023.
3. "APS Member History". search.amphilsoc.org. Retrieved June 1, 2023.
4. A Conversation with J. Robert Oppenheimer on YouTube
5. "Marston Morse - Scholars | Institute for Advanced Study". www.ias.edu. December 9, 2019. Retrieved December 26, 2021.
6. Marston Morse at the Mathematics Genealogy Project
7. O'Connor, John J.; Robertson, Edmund F., "Marston Morse", MacTutor History of Mathematics Archive, University of St Andrews
8. "Harold Marston Morse Dies at 85; Served With Einstein at Princeton". The New York Times. June 26, 1977. ISSN 0362-4331. Retrieved December 26, 2021.
9. "Obituaries 12/7/16". Town Topics. December 7, 2016. Retrieved January 14, 2024.
10. National Academy of Sciences (1994). "Marston Morse". Biographical Memoirs: Volume 65. Washington, DC: The National Academies Press. ISBN 978-0-309-07359-2.
11. "Noteworthy Morses". Morse Society. Retrieved June 5, 2022.
12. Morse, J. Howard; Leavitt, Emily W. (1903). "Anthony Morse and Four Generations". Morse genealogy, comprising the descendants of Samuel, Anthony, William, and Joseph Morse and John Moss: being a revision of the Memorial of the Morses, published by Abner Morse in 1850. Springfield Printing and Binding Company. hdl:2027/hvd.hxcrcu.
13. "Howard Calvin MORSE". Pilgrim Edward Doty Society: A Family History Society. Retrieved June 5, 2022.
14. Grimaud, Jessica (July 23, 2019). "Cousin Chart—Family Relationships Explained". FamilySearch. Retrieved June 5, 2022.
15. Dresden, Arnold (1936). "Review: Calculus of variations in the large, by Marston Morse". Bull. Amer. Math. Soc. 42 (9, Part 1): 607–612. doi:10.1090/s0002-9904-1936-06362-7.
16. Ahlfors, L. (1948). "Review: Topological methods in the theory of functions of a complex variable, by Marston Morse". Bull. Amer. Math. Soc. 54 (5): 489–491. doi:10.1090/s0002-9904-1948-09004-8.
17. Smale, Stephen (1977). "Review: Global variational analysis: Weierstrass integrals on a Riemannian manifold, by Marston Morse". Bull. Amer. Math. Soc. 83 (4): 683–693. doi:10.1090/s0002-9904-1977-14345-0.

Biographical references

• Pitcher, Everett (1994), "H. Marston Morse" (PDF), in National Academy of Sciences of the United States of America (ed.), Biographical Memoirs, vol. 65, Washington, D.C.: National Academies Press, pp. 223–240, ISBN 978-0-309-07359-2.

References

• Bott, Raoul (1980), "Marston Morse and his mathematical works", Bulletin of the American Mathematical Society, New Series, 3 (3): 907–950, doi:10.1090/s0273-0979-1980-14824-7, MR 0585177, Zbl 0469.01012.
• Nadis, Steve; Yau, Shing-Tung (2013), "Chapter 4. Analysis and Algebra Meet Topology: Marston Morse, Hassler Whitney, and Saunders Mac Lane", A History in Sum, Cambridge, MA: Harvard University Press, pp. 86–115, doi:10.4159/harvard.9780674726550, ISBN 978-0-674-72500-3, JSTOR j.ctt6wpqft, MR 3100544, Zbl 1290.01005 (e-book: ISBN 978-0-674-72655-0).

• 1892 births
• 1977 deaths
• 20th-century American mathematicians
• Colby College alumni
• Cornell University faculty
• Differential geometers
• Harvard University alumni
• Harvard University Department of Mathematics faculty
• Institute for Advanced Study faculty
• People from Waterville, Maine
• Princeton University faculty
• Brown University faculty
• American topologists
• National Medal of Science laureates
• Presidents of the American Mathematical Society
• Variational analysts
• Mathematicians from Maine
• Members of the United States National Academy of Sciences
• Members of the American Philosophical Society