Computer Physics Communications Program LibraryPrograms in Physics & Physical Chemistry |

[Licence| Download | New Version Template] adpx_v1_0.tar.gz(209 Kbytes) | ||
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Manuscript Title: Symbolic expansion of transcendental functions. | ||

Authors: S. Weinzierl | ||

Program title: nestedsums v 1.0 | ||

Catalogue identifier: ADPX_v1_0Distribution format: tar.gz | ||

Journal reference: Comput. Phys. Commun. 145(2002)357 | ||

Programming language: C++. | ||

RAM: 64M words | ||

Keywords: Multiple polylogarithms, Feynman integrals, General purpose, Function. | ||

Classification: 4.7. | ||

Nature of problem:Systematic expansion of higher transcendental functions in a small parameter. These expansions occur, for example, in the calculation of loop integrals in quantum field theory within dimensional regularization. | ||

Solution method:Algebraic manipulations of nested sums. | ||

Restrictions:Usually limited only by the available memory. | ||

Additional comments:Library required GiNaC 0.8.3, a library for symbolic calculations
in C++, is required. It is available from http://www.ginac.de.
Optionally, the program can also be used interactively. In this case
the program gTybalt, available from
http://www.fis.unipr.it/~stefanw/gtybalt.html is needed. | ||

Running time:Depending on the complexity of the problem, see also Sections 5 and 6. |

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