AbsArg ------ by Stephan Kaufmann Institute of Mechanics ETH Zentrum HG F38.4 CH-8092 Zurich Switzerland kaufmann@ifm.ethz.ch Summary: The functions Abs und Arg are generalized to work with symbolic expressions. A more detailed discussion is available in the header of "AbsArg.m" and "AbsArg-Notebook.ma". Both files contain the same definitions. Requirements: This package is based on SKPackages`NonNegativeQ` and Algebra`ReIm`. These packages must be present. Installation: Create a directory "SKPackages". It must be on the search path of Mathematica (e.g. in the directory "Packages"). Either copy the file "AbsArg.m" into the directory "SKPackages" or copy the file "AbsArg-Notebook.ma" into the directory "SKPackages" and rename the file to "AbsArg.m". Also copy the file "NonNegativeQ.m" (or the corresponding renamed notebook) into the directory "SKPackages". It is available from MathSource.