The Riegeom Package
Abstract tensor manipulation
These web pages describe an experimental version
of the algorithms presented in:

R. Portugal, Simplification of Tensor Expressions Obeying the Cyclic
Symmetry, in preparation.

K. Lake, N. Pelavas and R. Portugal, Simplification of Riemann Tensor
Polynomials, in preparation.

R. Portugal, Improved Algorithm for Tensor Simplification, submitted.

R. Portugal, An Algorithm to Simplify Tensor Expressions, Computer
Physics Communications, 115 (1998) 116.

R. Portugal & S. L. Sautú, Applications of Maple to General
Relativity, Computer Physics Communications 105 (1997) 233253.
You should understand that the Riegeom Package
is under development, hence many modifications will arise. No link between
the Riemann
Package and the new Riegeom Package
has been implemented yet.
The references describe algorithms to simplify tensor expressions that
can be implemented in any general purpose computer algebra system. Riegeom
Package is written in the Maple system (Waterloo
Maple Inc.).
Email address for contact: portugal@cat.cbpf.br
updated: March/1999.