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GR-Tensor

 

A useful program when you do General Relativity is GR-Tensor. It runs under Maple (there exists also a Mathematica version) and it calculates the Christoffel symbol, the Riemann tensor, the Ricci tensor, the curvature, etc. all you need in order to deal with a physical problem in General Relativity. It was created at Queen's University (Ontario) and you can download it from the web at http://astro.queensu.ca/ grtensor/

This was a great help in doing computation such as having an explicit form of the Raychaudhuri equation (gif page gif) in the case of the de Sitter metrics.

Here I will introduce this program that I used (MapleV version).





Peggy Varniere
Fri Jul 24 11:57:38 EDT 1998