Sage's Python wrapper for the PARI library, modified to stand alone. License: All parts of this package are released under the GNU General Public License, version 2 or (at your discretion) any later version as published by the Free Software Foundation. Specifically: * PARI/GP is Copyright (C) 2000-2013 by The PARI Group, Bordeaux, and released under GPL v2+ as per the README file in the included pari tarball. * The Cython code is primary derived from Sage version 7.4 and is copyright 2012 by William Stein, Jeroen Demeyer et. al. and released under GPL v2+ as per https://git.sagemath.org/sage.git/tag/?h=7.4 * The modifications are copyright 2012-present by Marc Culler and Nathan Dunfield and are hereby released under GPL v2+. Please see http://www.gnu.org/licenses/gpl-2.0.txt for the complete license text.