Walter Hayman Explained

Birth Name:Walter Kurt Hayman
Birth Date:1926 1, df=yes
Birth Place:Cologne, Germany
Nationality:British
Fields:Complex analysis
Workplaces:King's College, Newcastle
University of Exeter
Imperial College
Education:University of Cambridge
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Known For:Theory of subharmonic functions
Univalent function theory
Awards:Berwick Prize (1955)
Senior Berwick Prize (1964)
De Morgan Medal (1995)
Spouse:Margaret Hayman (née Crann)

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

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. He was a 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,[3] 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.[4]

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.

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

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

Papers

Books

References

Biographical references

General references

External links

Notes and References

  1. Web site: Professor Walter Hayman (1926-2020). London Mathematical Society. 7 January 2019. 8 January 2019. Johnston. John.
  2. http://www3.imperial.ac.uk/people/w.hayman Imperial College webpage
  3. https://pbs.twimg.com/media/EOeAumiXsAExFge.jpg:large Obituary
  4. http://www.gap-system.org/~history/Biographies/Hayman.html
  5. Web site: Paying it forward . 2024-07-03 . Johnian . en-GB.
  6. As stated by in his commemoration of Hayman's wife.
  7. https://royalsociety.org/people/walter-hayman-11599/ Royal Society biography
  8. According to the Finnish Academy of Science and Letters|2014}}|academic list of foreign members.
  9. See .
  10. Web site: Honorary doctorates - Uppsala University, Sweden. 9 June 2023.
  11. See the LMS announcement.
  12. See .
  13. Helms, L. L.. Review: Subharmonic functions, vol. 1, by W. K. Hayman and the late P. B. Kennedy. Bull. Amer. Math. Soc. (N.S.). 1979. 1. 2. 376–379. 10.1090/s0273-0979-1979-14604-4. free.
  14. Baernstein II, Albert. Review: Subharmonic functions, vol. 2, by W. K. Hayman. Bull. Amer. Math. Soc. (N.S.). 1991. 25. 2. 458–467. 10.1090/s0273-0979-1991-16091-x. free.
  15. Jenkins, James A.. James Allister Jenkins. Review: Multivalent functions by W. J. Hayman. 1959. 65. 3. 163–166.