README file for the `MatricesForHomalg' GAP4 package To get the newest version of this GAP 4 package download one of the archive files MatricesForHomalg-x.x.tar.gz MatricesForHomalg-x.x.zoo MatricesForHomalg-x.x.tar.bz2 MatricesForHomalg-x.x.zip and unpack it using gunzip MatricesForHomalg-x.x.tar.gz; tar xvf MatricesForHomalg-x.x.tar respectively unzoo -x MatricesForHomalg-x.x.zoo and so on. (Note that if you use a browser like `netscape' for downloading the archive file the `gunzip' step above may already be done by the browser, although the name of your file may still have the misleading `.gz' extension.) Do this preferably (but not necessarily) inside the `pkg' subdirectory of your GAP 4 installation. It creates a subdirectory called `MatricesForHomalg'. This completes the installation of the package. Testing the package is possible by invoking ReadPackage( "MatricesForHomalg", "maketest.g" ); from within GAP. E-mail me if there are any questions, remarks, suggestions. Also, I would like to hear about applications of this package. Mohamed Barakat, e-mail: barakat@mathematik.uni-kl.de