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Manuscript Title: Symbolic expansion of transcendental functions.
Authors: S. Weinzierl
Program title: nestedsums v 1.0
Catalogue identifier: ADPX_v1_0
Distribution 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.

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.