Hi, I put at arXiv.org 'An Example of Clifford Algebras Calculations with GiNaC'. The link to paper is http://arxiv.org/abs/cs.MS/0410044 and abstract is given below. Best wishes, Vladimir -- Vladimir V. Kisil email: kisilv@maths.leeds.ac.uk -- www: http://maths.leeds.ac.uk/~kisilv/ ------------------------------------------------------------------------------ \\ Title: An Example of Clifford Algebras Calculations with GiNaC Authors: Vladimir V. Kisil Comments: 20 pages, LaTeX2e, 12 PS graphics in one figure Report-no: LEEDS-MATH-PURE-2004-18 Subj-class: Mathematical Software; Computational Geometry; Graphics; Symbolic Computation \\ This example of Clifford algebras calculations uses GiNaC (http://www.ginac.de/) library, which includes a support for generic Clifford algebra starting from version~1.3.0. Both symbolic and numeric calculation are possible and can be blended with other functions of GiNaC. This calculations was made for the paper math.CV/0410399. Due to course described features of GiNaC should propagate into other software like GNU Octave (http://www.octave.org/) and gTybalt (http://www.fis.unipr.it/~stefanw/gtybalt.html) which uses GiNaC library as a back-end. \\