Walter Hayman
Walter Hayman | |
|---|---|
 | |
| Born | Walter Kurt Haymann 6 January 1926 Cologne, Germany |
| Died | 1 January 2020 (aged 93) |
| Education | University of Cambridge |
| Known for | Theory of subharmonic functions Univalent function theory |
| Spouse | Margaret Hayman (née Crann) |
| Awards | Berwick Prize (1955) Senior Berwick Prize (1964) De Morgan Medal (1995) |
| Scientific career | |
| Fields | Complex analysis |
| Institutions | King's College, Newcastle University of Exeter Imperial College |
| Website | www3 |
Walter Kurt Hayman FRS (formerly Haymann; 6 January 1926 – 1 January 2020) was a British mathematician known for contributions to complex analysis.[1] He was a professor at Imperial College London.[2]
Life and work
[edit]Hayman was born in Cologne, Germany, the son of Roman law professor Franz Haymann (1874-1947) and Ruth Therese Hensel, daughter of mathematician Kurt Hensel.[3] He was a great-great-grandson of acclaimed composer Fanny Mendelssohn. Because of his Jewish heritage, he left Germany, then under Nazi rule, alone by train in 1938. He continued his schooling at Gordonstoun School,[4] and later at St John's College, Cambridge under John Edensor Littlewood and his doctoral advisor Mary Cartwright. He taught at King's College, Newcastle, and the University of Exeter.[3]
In 1947, he married Margaret Riley Crann after they met at a Quaker meeting.[5] Together, they founded the British Mathematical Olympiad.[6] The pair had three daughters, including the peace activist Carolyn Hayman and the filmmaker Sheila Hayman.[3]
He is known for his asymptotic results in Bieberbach conjecture in 1955,[7] and for Hayman's alternatives in Nevanlinna Theory. His work with Wolfgang Fuchs gave a solution to an inverse problem of the Nevanlinna theory for entire functions, predating David Drasin's 1976 work.
Honours and awards
[edit]Hayman was elected to the Royal Society in 1956 and of the Finnish Academy of Science and Letters in 1978:[8] he was elected "Foreign member" of the Accademia dei Lincei on 16 December 1985.[9] In 1992 he received an honorary doctorate from the Faculty of Mathematics and Science at Uppsala University, Sweden[10] In 1995 he was awarded the De Morgan Medal by the London Mathematical Society.[11] In 2008, an issue of the Journal Computational Methods and Function Theory was dedicated to him on the occasion of his 80th birthday.[12]
Selected publications
[edit]
Papers
[edit]- Hayman, W. K. (1952), "Functions with values in a given domain", Proceedings of the American Mathematical Society, 3 (3): 428–432, doi:10.1090/S0002-9939-1952-0049323-9, MR 0049323, Zbl 0048.31402.
- Hayman, W. K. (1974), "The local growth of power series: a survey of the Wiman-Valiron method", Canadian Mathematical Bulletin, 17 (3): 317–358, CiteSeerX 10.1.1.433.7629, doi:10.4153/CMB-1974-064-0, MR 0385095, Zbl 0314.30021.
- Hayman, W. K.; Rossi, J. F. (1984), "Characteristic, maximum modulus and value distribution", Transactions of the American Mathematical Society, 284 (2): 651–664, doi:10.1090/S0002-9947-1984-0743737-2, MR 0743737, Zbl 0547.30023.
- Hayman, Walter K. (1993), "A problem on Fourier series arising from an Isoperimetric inequality", in Ricci, Paolo Emilio (ed.), Problemi attuali dell'analisi e della fisica matematica. Atti del simposio internazionale dedicato a Gaetano Fichera nel suo 70o compleanno. Taormina, 15–17 ottobre 1992, Roma: Dipartimento di Matematica Università di Roma La Sapienza – Aracne Editrice, pp. 119–125, MR 1249093, Zbl 0851.42009.
- Hayman, W. K. (2002), "Univalent and Multivalent Functions", in Kuhnau, Reiner (ed.), Geometric Function Theory, Handbook of Complex Analysis, vol. 1, Amsterdam: North-Holland, pp. 1–36, ISBN 978-0-444-82845-3, MR 1966188, Zbl 1069.30018.
Books
[edit]- Hayman, W. K. (1964), Meromorphic functions, Oxford Mathematical Monographs, Oxford: Clarendon Press, pp. XIV+191, MR 0164038, Zbl 0115.06203.
- Hayman, W. K. (1967), Research Problems in Function Theory, London: Athlone Press, pp. vii+56.
- Hayman, W. K.; Kennedy, P. B. (1976), Subharmonic functions. Volume 1, London Mathematical Society Monographs, vol. 9, London–New York: Academic Press, pp. XVII+284, ISBN 978-0-12-334801-2, MR 0460672, Zbl 0419.31001.[13]
- Hayman, W. K. (1988), Subharmonic functions. Volume 2, London Mathematical Society Monographs, vol. 20, London: Academic Press, pp. xiii+875, ISBN 978-0-12-334802-9, MR 1049148, Zbl 0699.31001.[14]
- Hayman, W. K. (1994) [1958], Multivalent functions, Cambridge Tracts on Mathematics, vol. 110 (Second ed.), Cambridge: Cambridge University Press, pp. xii+263, ISBN 978-0-521-46026-2, MR 1310776, Zbl 0904.30001.[15]
- Hayman, W. K. (2014), My Life and Functions, Logic Press, pp. iv+138, ISBN 978-1-326-03020-9
- Hayman, W. K.; Lingham, E. F. (2019), Research Problems in Function Theory - Fiftieth Anniversary Edition, Problem Books in Mathematics, Springer, pp. VIII+284, ISBN 978-3-030-25164-2
Notes
[edit]- ↑ Johnston, John (7 January 2019). "Professor Walter Hayman (1926-2020)". London Mathematical Society. Retrieved 8 January 2019.
- ↑ Imperial College webpage
- 1 2 3 O'Connor, John J.; Robertson, Edmund F., "Walter Hayman", MacTutor History of Mathematics Archive, University of St Andrews
- ↑ Obituary
- ↑ "Paying it forward". Johnian. Retrieved 3 July 2024.
- ↑ As stated by (Quadling 1995, p. 127) in his commemoration of Hayman's wife.
- ↑ Royal Society biography
- ↑ According to the academic list of foreign members.
- ↑ See (Accademia Nazionale dei Lincei 2012, p. 88).
- ↑ "Honorary doctorates - Uppsala University, Sweden". 9 June 2023.
- ↑ See the LMS announcement Archived 15 April 2012 at the Wayback Machine.
- ↑ See (Ruscheweyh 2008).
- ↑ Helms, L. L. (1979). "Review: Subharmonic functions, vol. 1, by W. K. Hayman and the late P. B. Kennedy" (PDF). Bulletin of the American Mathematical Society. 1 (2): 376–379. doi:10.1090/s0273-0979-1979-14604-4.
- ↑ Baernstein II, Albert (1991). "Review: Subharmonic functions, vol. 2, by W. K. Hayman" (PDF). Bulletin of the American Mathematical Society. 25 (2): 458–467. doi:10.1090/s0273-0979-1991-16091-x.
- ↑ Jenkins, James A. (1959). "Review: Multivalent functions by W. J. Hayman" (PDF). Bulletin of the American Mathematical Society. 65 (3): 163–166.
References
[edit]Biographical references
[edit]- Accademia Nazionale dei Lincei (2012), Annuario dell'Accademia Nazionale dei Lincei 2012 – CDX dalla Sua Fondazione (PDF) (in Italian), Roma: Accademia Nazionale dei Lincei, p. 734, archived from the original (PDF) on 4 March 2016, retrieved 6 December 2014. The "Yearbook" of the renowned Italian scientific institution, including an historical sketch of its history, the list of all past and present members as well as a wealth of information about its academic and scientific activities.
- Quadling, Douglas (1995), "Obituary: Margaret Hayman", The Mathematical Gazette, 79 (484): 127, doi:10.1017/S0025557200147813, JSTOR 3620019.
- Finnish Academy of Science and Letters (2014), Ulkomaiset jäsenet – Foreign Members, retrieved 21 December 2014.
General references
[edit]- Drasin, David (May 2015), "My Life and Functions by Walter K. Hayman", Notices of the American Mathematical Society, 68 (5): 517–520, doi:10.1090/noti1250. The review of the autobiographical book of Hayman.
- Ruscheweyh, S., ed. (2008), "Special Volume. Dedicated to Walter K. Hayman on the occasion of his 80th birthday", Computational Methods and Function Theory, 8 (1–2), Lemgo: xliii+640, ISSN 1617-9447 (online ISSN 2195-3724).
External links
[edit]
- Walter Hayman at the Mathematics Genealogy Project
- Obituary at the London Mathematical Society
- 1926 births
- 2020 deaths
- 20th-century British mathematicians
- 21st-century British mathematicians
- People educated at Gordonstoun
- Alumni of St John's College, Cambridge
- German expatriate academics in the United Kingdom
- British people of German-Jewish descent
- Complex analysts
- Mathematical analysts
- Mathematics education in the United Kingdom
- Deans of the Royal College of Science
- De Morgan Medallists
- British Quakers
- British fellows of the Royal Society