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Anthony C. Hearn

Anthony C. Hearn is an Australian-American computer scientist and adjunct staff member at RAND Corporation and at the Institute for Defense Analyses Center for Computing Sciences.[1] He is best known for his pioneering contributions in mathematical software development, most notably in developing the computer algebra system REDUCE, which is the oldest such system still in active use.[2] He was also one of the founders of the CSNET computer network, for which he shared the Jonathan B. Postel Service Award with Peter J. Denning, David Farber, and Lawrence Landweber in 2009.[3] He was elected a Fellow of the Association for Computing Machinery in 2006 "for contributions to computer algebra and symbolic computation."[4]

Anthony C. Hearn
Alma mater University of Adelaide
University of Cambridge
Known for Gerasimov-Drell-Hearn sum rule
Scientific career
Fields Particle physics
Computer science
Institutions Stanford University
Rutherford Laboratory
University of Utah
RAND Corporation


Hearn attended the University of Adelaide for his bachelor's degree, graduating in 1958. He attended the University of Cambridge for his PhD in theoretical physics and graduated in 1962. From 1962 to 1964, he was a research associate in physics at Stanford University, returning as an assistant professor and Sloan Foundation Fellow in 1965 after a year at the Rutherford Laboratory in England.[5][1] While at Stanford, he worked with Sidney Drell and formulated the Gerasimov-Drell-Hearn sum rule for connecting the Compton scattering amplitudes to the inclusive photoproduction cross sections in particle physics.[6] In 1969, he joined the faculty at the University of Utah as an associate professor of physics and became full professor in 1971. Around this period he began using ideas and tools from computer science to help solve problems symbolically in high energy physics.[7][8][9] From 1973 until 1980, he was professor and chair of the University of Utah School of Computing. He joined RAND Corporation in 1980 as head of the Information Sciences Department, where he served until 1984.[1] He worked at the National Science Foundation as a member of the Program Advisory Committee for the Office of Advanced Scientific Computing from 1984 to 1986.[10] He was a resident scholar at RAND from 1990 to 1996.[1]


  1. ^ a b c d "Anthony C. Hearn - Profile". RAND Corporation. Retrieved 24 August 2017. 
  2. ^ "Computer Science History". School of Computing. University of Utah. Retrieved 24 August 2017. 
  3. ^ Wood, Greg (29 July 2009). "Trailblazing CSNET Network Receives 2009 Jonathan B. Postel Service Award". Internet Society. Retrieved 24 August 2017. 
  4. ^ "Anthony C Hearn". Awards. Association for Computing Machinery. Retrieved 24 August 2017. 
  5. ^ "Mangers on the Move". Computerworld. Vol. 15 no. 3. IDG Enterprise. 19 January 1981. p. 24. ISSN 0010-4841. 
  6. ^ Drechsel, Dieter; Tiator, Lothar (2004). "The Gerasimov-Drell-Hearn Sum Rule and the Spin Structure of the Nucleon". Annual Review of Nuclear and Particle Science. 54 (1): 69–114. arXiv:nucl-th/0406059 . Bibcode:2004ARNPS..54...69D. doi:10.1146/annurev.nucl.54.070103.181159. Retrieved 24 August 2017. 
  7. ^ Hearn, Anthony C. (1971). "Applications of Symbol Manipulation in Theoretical Physics". Commun. ACM. 14 (8): 511–516. doi:10.1145/362637.362641. ISSN 0001-0782. 
  8. ^ Campbell, J. A; Hearn, Anthony C (1 April 1970). "Symbolic analysis of Feynman diagrams by computer". Journal of Computational Physics. 5 (2): 280–327. Bibcode:1970JCoPh...5..280C. doi:10.1016/0021-9991(70)90064-1. 
  9. ^ Fox, John A; Hearn, Anthony C (1 March 1974). "Analytic computation of some integrals in fourth order quantum electrodynamics". Journal of Computational Physics. 14 (3): 301–317. Bibcode:1974JCoPh..14..301F. doi:10.1016/0021-9991(74)90055-2. 
  10. ^ Finkbeiner, Ann. "National Science Foundation Annual Report" (PDF). Retrieved 24 August 2017.