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Various parts of Nemo are licensed differently.

As Nemo links dynamically at runtime with various libraries all of whose licenses are compatible with GPL v3+, you may safely distribute Nemo as a whole under the terms of that license (see the MPFR or MPIR source trees downloaded as part of the Nemo package installation for copies of this license, or refer to it online here:

https://www.gnu.org/copyleft/gpl.txt

Individual parts of Nemo may be distributed according to more permissive terms as laid out below:

  • The MPIR and MPFR libraries are licensed LGPL v3+. The license texts are distributed with the libraries, which are downloaded as part of the Nemo package installation.

  • The Flint library is licensed LGPL v2.1+. The license text is supplied with the library, which is downloaded as part of the Nemo package installation.

  • The ANTIC library is licensed GPL v2+. The license text is supplied with the library, which is downloaded as part of the Nemo package installation.

  • The file ZZ.jl is licensed with the MIT license (see ZZ.jl for precise conditions of the license).

  • The Arb library is licensed LGPL v2.1+. The license text is supplied with the library, which is downloaded as part of the Nemo package installation.

  • The Pari library is licensed GPL. The license text is supplied with the library, which is downloaded as part of the Nemo package installation.

  • The individual .jl files (other than ZZ.jl) in the Nemo.jl package are licensed under the Simplified "2-clause" BSD License:

Copyright (c) 2014-2016: William Hart, Tommy Hofmann, Claus Fieker, Fredrik Johansson.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
  2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

External libraries include their own licenses: