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Iterated monodromy groups in GAP
GAP Shell C Java
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The IMG package This is the README file for the GAP package "IMG". This package implements Iterated Monodromy groups. This release (0.0) is the first containing the basic functionality, though some rough edges will still need to be smoothed. In particular, the TODO file describes plans for future development, including computations of presentations for self-similar groups, interval arithmetic for complex dynamics, etc. The package is distributed in source form, and does not require anything else than a running GAP 4.5 or later. For updates, check https://github.com/laurentbartholdi/img/ To use the package, start GAP and type LoadPackage("IMG"); The "IMG" package banner should appear on the screen. For details on how to use the IMG package, please consult the documentation. Though this is usually not necessary, it may be recompiled, after the command `LoadPackage("IMG")', by invoking DOC@IMG(); at the GAP prompt. The documentation will then be available in the `doc' subdirectory (view the file `manual.pdf' via a PDF viewer). An external module (DLL) provides floating-point functions used for complex dynamics calculations. To compile it, first make sure that your system has C and JAVA compilers. IMG needs some external libraries, but they are included in the subdirectory `extern'. If your system has them, their location can be specified using the arguments `--with-levmar' and `--with-libdogleg' to the `./configure' script. The options `--with-gaproot', `--with-gaparch' and `CONFIGNAME' tell IMG where to look for the GAP installation; by default, IMG searches for it in ../.. and /usr/local/src/gap. In all cases, then run './configure && make' in IMG's root directory. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program, in the file COPYING. If not, see <http://www.gnu.org/licenses/>. Laurent Bartholdi, Göttingen, 19 November 2012