Manny Lehman (computer scientist)

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Manny Lehman
Born(1925-01-24)24 January 1925
Died29 December 2010 (aged 85)
Jerusalem, Israel
Alma materImperial College London
Known forLehman's laws of software evolution
SpouseChava Robinson (m. 1953)
AwardsHarlan D. Mills Award (2001)
FREng[1] (2012)
Scientific career
Ministry of Defense (Israel)
Imperial College London
Middlesex University
Thesis Parallel Arithmetic Units and Their Control  (1957)
Doctoral advisorK. D. Tocher[2]
Doctoral studentsPeter G. Harrison

Meir "Manny" Lehman, FREng[1] (24 January 1925 – 29 December 2010) was a professor in the School of Computing Science at Middlesex University. From 1972 to 2002 he was a Professor and Head of the Computing Department at Imperial College London. His research contributions include the early realisation of the software evolution phenomenon and the eponymous Lehman's laws of software evolution.[3][4]


Lehman was born in Germany on 24 January 1925 and emigrated to England in 1931.[5][6] He studied mathematics as an undergraduate at Imperial College London where he was involved in the design of the Imperial College Computing Engine's Digital Computer Arithmetic Unit.[7] He spent a year at Ferranti in London before working at Israel's Ministry of Defense from 1957 to 1964. From 1964 to 1972 he worked at IBM's research division in Yorktown Heights, NY where he studied program evolution with Les Belady. The study of IBM's programming process gave the foundations for Lehman's laws of software evolution.[8] In 1972 he returned to Imperial College where he was Head of Section and later Head of Department (1979–1984). Lehman remained at Imperial for some thirty years until 2002 when he moved to the School of Computing Science at Middlesex University. After retiring from Middlesex he moved to Jerusalem, Israel, where he died on 29 December 2010.[9]

Awards and honours[edit]


  1. ^ a b c "List of Fellows".
  2. ^ "Meir M. Lehman: An Interview Conducted by William Aspray". IEEE History Center. 23 September 1993. Retrieved 6 October 2012.
  3. ^ Cook, Stephen; Harrison, Rachel; Lehman, Meir M.; Wernick, Paul (November 2005). "Evolution in software systems: foundations of the SPE classification scheme". Journal of Software Maintenance and Evolution: Research and Practice. 18 (1). John Wiley & Sons, Ltd.: 1–35. doi:10.1002/smr.314. Archived from the original on 5 January 2013.
  4. ^ Canfora, G.; Dalcher, D.; Raffo, D.; Basili, V. R.; Fernández-Ramil, J.; Rajlich, V. C.; Bennett, K.; Burd, L.; Munro, M.; Drossopoulou, S.; Boehm, B.; Eisenbach, S.; Michaelson, G.; Dalcher, D.; Ross, P.; Wernick, P. D.; Perry, D. E. (2011). "In memory of Manny Lehman, 'Father of Software Evolution'". Journal of Software Maintenance and Evolution: Research and Practice. 23 (3): 137. doi:10.1002/smr.537.
  5. ^ Gay, Hannah (2007). The history of Imperial College London, 1907–2007. Imperial College Press. p. 562. ISBN 978-1-86094-708-7. Retrieved 12 October 2011.
  6. ^ a b "Prof Manny Lehman, FREng". Debrett's. Archived from the original on 25 July 2013. Retrieved 9 October 2011.
  7. ^ Gay, Hannah (2007). The history of Imperial College London, 1907–2007. World Scientific. p. 291. ISBN 978-1-86094-709-4.
  8. ^ "ACM Fellow Profile for Meir M. (Manny) Lehman". ACM. 31 May 2007. Archived from the original on 28 September 2011. Retrieved 9 June 2009.
  9. ^ Susan Eisenbach (4 February 2011). "Obituary: Professor Manny Lehman". Reporter. Imperial College London. Archived from the original on 6 June 2011. Retrieved 4 May 2011.
  10. ^ "ACM Fellows". ACM. Archived from the original on 30 May 2011. Retrieved 17 June 2011.
  11. ^ "Past recipients for Harlan D. Mills Award". IEEE Computer Society. Archived from the original on 29 November 2014. Retrieved 13 April 2011.
  • M.M. Lehman. "Programs, life cycles, and laws of software evolution", Proceedings of the IEEE, pages 1060–1076, September 1980
  • Laszlo Belady, M. M. Lehman: A Model of Large Program Development. IBM Systems Journal 15(3): 225–252 (1976)

External links[edit]