This package was debianised by Ben Burton <bab@debian.org> on
Mon,  1 Oct 2001 20:44:04 -0500.

It was downloaded from http://regina-normal.github.io/.

Upstream Authors:

  The primary developers of Regina are:

    Benjamin Burton <bab@maths.uq.edu.au>
    Ryan Budney <rybu@uvic.ca>
    William Pettersson <william.pettersson@gmail.com>

  Many others have been of assistance with this project, be it through time,
  knowledge, testing or code.  Please see the full list of acknowledgements
  in the users' handbook.

Copyright:

  Regina - Software for low-dimensional topology
  Copyright (c) 1999-2020, The Regina development team


  CITATION:

  If you find Regina useful in your research, please consider citing it as
  you would any other paper that you use.  A suggested form of reference is:

    Benjamin A. Burton, Ryan Budney, William Pettersson, et al.,
    "Regina: Software for low-dimensional topology",
    http://regina-normal.github.io/, 1999-2020.


  COPYING AND MODIFICATION:

  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 (at your
  option) any later version.

  Some of this code comes with additional permissions; see the section
  below regarding online distribution.

  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.

  A full copy of the GNU General Public License should be included below;
  if not, write to the Free Software Foundation, Inc., 51 Franklin St,
  Fifth Floor, Boston, MA 02110-1301, USA.


  ONLINE DISTRIBUTION:

  Regina's own source code comes with the following permissions in
  addition to the GNU General Public License:

  As an exception, when this program is distributed through (i) the
  App Store by Apple Inc.; (ii) the Mac App Store by Apple Inc.; or
  (iii) Google Play by Google Inc., then that store may impose any
  digital rights management, device limits and/or redistribution
  restrictions that are required by its terms of service.

  Some third-party libraries included in Regina are not granted this
  exception, and must be removed from any build that is distributed on
  stores that cannot comply with the GNU General Public License (such as
  Apple's App Store).  See the third-party licenses below for details.


  SNAPPEA AND SNAPPY:

  Regina includes portions of the SnapPea kernel and its successor SnapPy,
  which it uses for some geometric calculations.  The SnapPea kernel was
  originally written by Jeff Weeks.  SnapPy, where this kernel is now maintained,
  is primarily developed by Marc Culler and Nathan Dunfield, with contributions
  from many people.  SnapPy and the corresponding SnapPea kernel are distributed
  under the terms of the GNU General Public License, version 2 or any later
  version, as published by the Free Software Foundation.


  NORMALIZ LIBRARY:

  Regina includes a copy of libnormaliz, which it uses to help with the
  enumeration of fundamental normal surfaces.  Normaliz was written by Winfried
  Bruns, Bogdan Ichim and Christof Soeger.  It is distributed under the terms of
  the GNU General Public License as published by the Free Software Foundation,
  either version 3 of the License, or (at your option) any later version.


  PYBIND11:

  Regina includes a copy of pybind11, which it uses to generate python bindings
  for Regina's native C++ code.  The pybind11 library was written by
  Wenzel Jakob, and is distributed under a BSD-style license that is shipped
  with Regina's source code in the file python/pybind11/LICENSE.


  ORB KERNEL:

  Regina includes snippets of code from Orb, for use in importing and
  exporting files in Orb / Casson format.  Orb is based on SnapPea
  (see above) with additional code written by Damian Heard, who has also
  given permission for his code to be distributed under the terms of the
  GNU General Public License.


  SYNTAX HIGHLIGHTING:

  Regina's graphical user interfaces incorporate a modified version of the KDE
  syntax-highlighting framework, which they use for highlighting Python scripts.
  This framework is distributed under the GNU Library General Public License,
  version 2 or any later version, as published by the Free Software Foundation.


  ICONS:

  The Oxygen icons are dual-licensed under the Creative Common Attribution-
  ShareAlike 3.0 License or the GNU Library General Public License.
  The python icons are based on applications-python.svg as shipped with the
  humanity-icon-theme package in Ubuntu 11.04, the contents of which
  are licensed under the GNU General Public License version 2.
  The die icon is based on an image from openclipart.org, which has been
  released into the public domain.


On Debian GNU/Linux systems, the complete text of the GNU General
Public License can be found in `/usr/share/common-licenses/GPL'.
