Programs in Physics & Physical Chemistry
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Programs in Physics & Physical Chemistry |
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| [Licence| Download | E-mail| New Version Template] aebh_v1_0.tar.gz(1501 Kbytes) | ||
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| Manuscript Title: xPerm: fast index canonicalization for tensor computer algebra | ||
| Authors: José M. Martín-García | ||
| Program title: xPerm | ||
| Catalogue identifier: AEBH_v1_0 Distribution format: tar.gz | ||
| Journal reference: Comput. Phys. Commun. 179(2008)597 | ||
| Programming language: C and Mathematica (version 5.0 or higher). | ||
| Computer: Any computer running C and Mathematica (version 5.0 or higher). | ||
| Operating system: Linux, Unix, Windows XP, MacOS. | ||
| RAM: 20 Mbyte | ||
| Word size: 64 or 32 bits | ||
| Keywords: index canonicalization, Mathematica, computer algebra. | ||
| PACS: 02.70.Wz, 02.10.Ox, 04.20.Cv. | ||
| Classification: 1.5, 5. | ||
Nature of problem: Canonicalization of indexed expressions with respect to permutation symmetries. | ||
Solution method: The Butler-Portugal algorithm. | ||
Restrictions: Multiterm symmetries are not considered. | ||
Running time: A few seconds with generic expressions of up to 100 indices. The xPermDoc.nb notebook supplied with the distribution takes approximately one and a half hours to execute in full. |
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