Download and Installation

The current version of RISCErgoSum is 1.1.3.

Short Instruction

Get one of the files riscergosum-1.1.3.tgz or from and extract it in the Applications subdirectory of your local Mathematica $UserBaseDirectory.

Detailed Instruction

Start Mathematica and type:


at the command prompt.

Suppose this value is /home/hemmecke/.Mathematica. Exit Mathematica and extract the .tgz file into the Applications subdirectory.

Under Linux (substitute appropriately):

tar xvzf riscergosum-x.y.z.tgz -C /home/hemmecke/.Mathematica/Applications

Under MacOS the output from $UserBaseDirectory will most probably look similar to /Users/hemmecke/Library/Mathematica. Thus, in a terminal type:

tar xvzf riscergosum-x.y.z.tgz -C /Users/hemmecke/Library/Mathematica/Applications

Note that the Library folder is usually hidden in the file browser.

Under Windows (substitute appropriately) unzip the and move the files (and subdirectories) to $UserBaseDirectory/Applications.

After extracting the files into the Applications subdirectory, you should find there the subdirectories


and in particular the file


If you don’t see RISC and InvPhi directly under Applications, then something went wrong and the following will not work.

Start Mathematica and type:

<< RISC`MultiSum`

You should then see something like:

Package MultiSum version 2.3 written by Kurt Wegschaider
enhanced by Axel Riese and Burkhard Zimmermann
Copyright 1995-2009, Research Institute for Symbolic Computation (RISC),
Johannes Kepler University, Linz, Austria