SHEEP (symbolic computation system)
- SHEEP (symbolic computation system)
SHEEP is one of the earliest symbolic computation systems. It is specialized for computations with tensors, and was designed for the needs of researchers working with general relativity and other theories involving extensive tensor calculus computations.
SHEEP is an open source freeware package (copyrighted, but free for educational and research use).
The name "SHEEP" is pun on the Lisp Algebraic Manipulator or "LAM" on which SHEEP is based. The package was written by Inge Frick, using earlier work by Ian Cohen and Ray d'Inverno. Jan E. Åman wrote an important package in SHEEP to carry out the Cartan-Karlhede algorithm. Unfortunately, this software works only on certain rather old computers and old and proprietary operating systems.
A more recent version of SHEEP, written by Jim Skea, runs under Cambridge Lisp, which is also used for REDUCE.
ee also
*GRTensorII
External links
* [ftp://euclid.maths.qmw.ac.uk/pub/sheep/ SHEEP download] at Queen Mary, University of London
* [http://www.computeralgebra.nl/systemsoverview/special/tensoranalysis/sheep/productinfo.html Some sources of info on Sheep]
Wikimedia Foundation.
2010.
Look at other dictionaries:
Sheep (disambiguation) — Sheep are quadrupedal, cloven hooved, ruminant mammals typically kept as livestock.Sheep may also refer to: * Ovis, the genus of both wild and domestic sheep * Sheep (zodiac), one of the animals in the Chinese zodiac * Sheep (song), a song by… … Wikipedia
Cartan-Karlhede algorithm — One of the most fundamental problems of Riemannian geometry is this: given two Riemannian manifolds of the same dimension, how can one tell if they are locally isometric? This question was addressed by Elwin Christoffel, and completely solved by… … Wikipedia
List of mathematics articles (S) — NOTOC S S duality S matrix S plane S transform S unit S.O.S. Mathematics SA subgroup Saccheri quadrilateral Sacks spiral Sacred geometry Saddle node bifurcation Saddle point Saddle surface Sadleirian Professor of Pure Mathematics Safe prime Safe… … Wikipedia
Simulated reality — is the proposition that reality could be simulated perhaps by computer simulation to a degree indistinguishable from true reality. It could contain conscious minds which may or may not be fully aware that they are living inside a simulation. This … Wikipedia
France — /frans, frahns/; Fr. /frddahonns/, n. 1. Anatole /ann nann tawl /, (Jacques Anatole Thibault), 1844 1924, French novelist and essayist: Nobel prize 1921. 2. a republic in W Europe. 58,470,421; 212,736 sq. mi. (550,985 sq. km). Cap.: Paris. 3.… … Universalium
Mesopotamia, history of — ▪ historical region, Asia Introduction history of the region in southwestern Asia where the world s earliest civilization developed. The name comes from a Greek word meaning “between rivers,” referring to the land between the Tigris and… … Universalium
education — /ej oo kay sheuhn/, n. 1. the act or process of imparting or acquiring general knowledge, developing the powers of reasoning and judgment, and generally of preparing oneself or others intellectually for mature life. 2. the act or process of… … Universalium
