# The Riemann Tensor Package

**Tools for the manipulation of tensor components**
**Applications to General Relativity Theory**
**Some tools for tensor abstract manipulation**

Riemann is a Maple package for calculating components
of user-defined or built-in tensors used in General Relativity. One must define
the metric or the tetrad in order to calculate tensor components. Riemann tensor
package can calculate scalars or components of tensors generated by the
Canon tensor package.

The package has been named in honor
of G.F.B.Riemann,
the German mathematician who generalized Gauss
work on differential geometry. Riemann's ideas were used by A.Einstein
as the mathematical background of the General Relativity theory.

## **Download**

Only the version below is compatible with the Canon tensor package
Instalation
instructions

version for Maple 9.5,10,11

Version for Maple 6,7 and 8

README
Maple
6,7,8

The Riemann package is included in the share library of Maple
V release 5. To access the package, one can give the following Maple commands:

- with(share);
- with(Riemann);

**Reference:**

For a detailed description of the Riemann package, see:

R. Portugal & S. L. Sautú, Applications of Maple to General Relativity,
Computer Physics Communications **105** (1997) 233-253.

## LINKS: Gravitation and Computer Algebra

Email address for contact: Portugal@Lncc.Br

updated: April 2008.