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Language peer sets for SHEEP:
Denmark↑
Denmark/1978↑
Designed 1978 ↑
1970s languages ↑
Fourth generation↑
High Cold War↑

SHEEP(ID:1748/she001)

alternate simple view
Country: Denmark
Designed 1978

Symbolic math, especially tensor analysis and General Relativity. Inge Frick, Stockholm, late 70's to early 80's. Implemented in DEC-10 assembly language, then in several LISPs.

Named SHEEP as it was an extension of LAMn (might as well be hung for a sheep as a lamb)
Related languages
LAM → SHEEP   Augmentation of
SHEEP → STENSOR   Written using
References:
  • Frick (1976) Frick, I. "Sheep" NIGSAM:10 1976
  • Hörnfeldt (1976) Hörnfeldt, L.: "A Tensor Compiler". NIGSAM 11 1976
  • Frick (1977) Frick, I.: "SHEEP, users guide", preprint) Insti.of Theor. Physics, Univ. of Stockholm.
  • Frick (1977) Frick, I.: "The computer Algebra System SHEEP, what it can and cannot do in General Relativity". 1977
  • Hörnfeldt (1977) Hörnfeldt, L; "Indicial and componentwise tensor calculus with computer" NIGSAM 12 1977
  • Hörnfeldt (1978) Hörnfeldt, L. "An extension of SHEEP for indicial tensor calculus and substitution of sums" Meeting Report of SEAS SMC committee Amsterdam, 17-18-19 January 1978 (AMSTERDAM 78) Abstract
  • D'Inverno (1982) D'Inverno, R.A. "Interacting with SHEEP" General Relativity and Gravitation 14(10) 1982 Abstract DOI
  • Frick and Åman (1985) Frick, Inge and Åman, Jan E. "SHEEP and Classification in General Relativity" Abstract
          in (1985) European Conference on Computer Algebra EUROCAL 85 LNCS 204
  • Wolfram, Stephen (1985) Wolfram, Stephen "Symbolic Mathematical Computation"
          in [ACM] (1985) [ACM] CACM 28(04) (April 1985)
  • MacCallum (1993) MacCallum, M.A.H. Sheep Introductory letter 1993 Abstract Online copy Extract: Introduction
          in [ACM] (1985) [ACM] CACM 28(04) (April 1985)
  • Skea J.E.F. et al (1993) Skea J.E.F. et al "Sheep, a Computer Algebra System for General Relativity"
          in Proc First Brazilian School on Comp Alg, W. (1993) Proc First Brazilian School on Comp Alg, W. Roque et al eds, Oxford U Press 1993
  • MacCallum, M. A. H., and Skea, J. (1994) MacCallum, M. A. H., and Skea, J. "Algebraic computing in general relativity" Proceedings of the first Brazilian school on computer algebra, Vol. 2, eds. Reboucas, M. J., and Roque, W. L., (Oxford University Press, Oxford). 1994
          in Proc First Brazilian School on Comp Alg, W. (1993) Proc First Brazilian School on Comp Alg, W. Roque et al eds, Oxford U Press 1993
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