The symengine R package provides an R interface to the SymEngine C++ library. It was
written by Jialin Ma, Isuru Fernando and Xin Chen.

The R package bundles and redistributes the SymEngine C++ library source under
'src/upstream', which itself carries the following AUTHORS file:

    All people who contributed to SymEngine by sending at least a patch or more (in
    the order of the date of their first contribution). You can generate this file
    by: bin/update_authors.sh
    
    
    Ondřej Čertík <ondrej@certik.us>
    Dale Lukas Peterson <hazelnusse@gmail.com>
    Thilina Bandara Rathnayake <thilinarmtb@gmail.com>
    Christopher Dembia <cld72@cornell.edu>
    Julien Rioux <julien.rioux@gmail.com>
    Sushant Hiray <hiraysushant@gmail.com>
    Thomas Hisch <t.hisch@gmail.com>
    Vinzent Steinberg <Vinzent.Steinberg@gmail.com>
    Isuru Fernando <isuruf@gmail.com>
    Peter Brady <petertbrady@gmail.com>
    Shivam Vats <shivamvats.iitkgp@gmail.com>
    Sumith Kulal <sumith1896@gmail.com>
    Sanka Rasnayaka <nuwan.ras@gmail.com>
    Abinash Meher <abinashdakshana999@gmail.com>
    Govind Sahai <gsiitbhu@gmail.com>
    AMiT Kumar <dtu.amit@gmail.com>
    Francesco Biscani <bluescarni@gmail.com>
    Connor Behan <connor.behan@gmail.com>
    Björn Dahlgren <bjodah@gmail.com>
    Ralf Stephan <ralf@ark.in-berlin.de>
    Indrek Mandre <indrek@mare.ee>
    Abhinav Agarwal <abhinavagarwal1996@gmail.com>
    Akash Trehan <akash.trehan123@gmail.com>
    Srajan Garg <srajan.garg@gmail.com>
    Abhimanyu Siwach <siwachabhi@gmail.com>
    Pradyot Prakash <pp2105@gmail.com>
    malayaleecoder <malayaleecoder@gmail.com>
    Nishant Nikhil <nishantiam@gmail.com>
    Zhang Yuning <codeworm96@outlook.com>
    Charles Chen <charlesyychen@gmail.com>
    Matthew Luszczak <myluszczak@ucdavis.edu>
    Iris Lui <irislui66@gmail.com>
    Rajith Vidanaarachchi <rajith.vidanaarachchi@gmail.com>
    Kunal Singh <kunalsingh.iitkgp@gmail.com>
    Vic Luo <vicluo96@gmail.com>
    James Stojic <jbrankos@yahoo.com>
    Arihant Parsoya <parsoyaarihant@gmail.com>
    Ritesh Kumar <babarwal.ritesh@gmail.com>
    Shikhar Jaiswal <jaiswalshikhar87@gmail.com>
    Vishu Sidana <vishusidana95@gmail.com>
    Siddharth Bhat <siddu.druid@gmail.com>
    Tao He <sighingnow@gmail.com>
    Chad Mills <chad.mills@gmail.com>
    Jean-Paul Pelteret <jppelteret@gmail.com>
    Ranjith Kumar <ranjith.dakshana2015@gmail.com>
    Kv Manohar <kvmanohar22@gmail.com>
    Kanchana Ruwanpathirana <kanchana.ruwanpathirana@gmail.com>
    Melanka Saroad <saroadmelanka@yahoo.com>
    Dirk Reusch <lists@kybdr.de>
    Gerrit Ansmann <wrzlrpmft@users.noreply.github.com>
    Jialin Ma <marlin-@gmx.cn>
    Nilay Pochhi <pochhi.nilay@gmail.com>
    Eeshan Gupta <eeshan9815@gmail.com>
    Ziyi Yan <cxfyzy@gmail.com>
    Andreas Humenberger <ahumenberger@gmail.com>
    Clouds Flowing <clouds.flowing@gmail.com>
    Sylvain Corlay <sylvain.corlay@gmail.com>
    Kieran Kaempen <kaempen2@illinois.edu>
    Alan Hu <alanlh2@illinois.edu>
    Rajiv Ranjan Singh <rajivperfect007@gmail.com>
    Francesco Bonazzi <franz.bonazzi@gmail.com>
    Simon Stelter <simon.stelter@gmail.com>
    Brandon Bocklund <brandonbocklund@gmail.com>
    Marcello Mansueto <mvm@mydatamodels.com>
    Steven Lee <stevenlee123@protonmail.com>
    Roger Luo <hiroger@qq.com>
    Jogi Miglani <jmig5776@gmail.com>
    Liam Keegan <liam@keegan.ch>

In addition, the SymEngine C++ library itself contains subcomponents with the following additional copyright holders. See file COPYRIGHTS or inst/COPYRIGHTS for the preserved copyright notices.

    Copyright (c) 2013-2017 SymEngine Development Team
    Copyright (2004) Sandia Corporation
    Copyright (c) 2001, 2002 Enthought, Inc.
    Copyright (c) 2003-2012 SciPy Developers.
    Copyright 2014 Google Inc.  All rights reserved.
    Copyright (c) 2016 Manuel Krebber
    Copyright (C) 1984, 1989-1990, 2000-2015 Free Software Foundation, Inc.
    Copyright 2012-2016 Sascha Kratky
    Copyright (c) 2010, Ondrej Certik