PROGRAM SUMMARY
Title of program:
nestedsums v 1.0
Catalogue identifier:
ADPX
Ref. in CPC:
145(2002)357
Distribution format: tar gzip file
High speed store required:
64MK words
Number of lines in distributed program, including test data, etc:
42352
Keywords:
Multiple polylogarithms, Feynman integrals, General purpose, Function.
Programming language used: C++
Nature of physical 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.
Method of solution:
Algebraic manipulations of nested sums.
Restrictions:
Usually limited only by the available memory.
Typical running time:
Depending on the complexity of the problem, see also Sections 5 and 6.
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.