.. DOCUMENTATION BUILT FROM RELEASE: 2.1.1-1-g3a5adfea (Jan 18, 2019) .. : HORTON: Helpful Open-source Research TOol for N-fermion systems. : Copyright (C) 2011-2019 The HORTON Development Team : : This file is part of HORTON. : : HORTON 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 3 : of the License, or (at your option) any later version. : : HORTON 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; if not, see : : -- HORTON |version| ################ Motivated by our frustration with the difficulty of adding new features to existing quantum chemistry programs, we decided to create our own *H*\ elpful *O*\ pen-source *R*\ esearch *TO*\ ol for *N*\ -fermion systems (HORTON). The emphasis here is on the world *helpful*. HORTON is not intended to be a replacement for existing quantum chemistry software, but a helpful supplement to it. Our ambition is to provide a research tool that is computationally-efficient enough to be helpful, without compromising code-readability and user-friendliness. Our hope is that users will find HORTON helpful for developing and exploring new methods, for interpreting the results of electronic structure calculations, and for interacting with other computational modeling software. More details are provided in the :ref:`intro_horton_overview`. .. toctree:: :maxdepth: 1 :numbered: intro_horton_overview intro_citing_horton intro_license_information intro_contact_information .. toctree:: :maxdepth: 2 :numbered: :caption: User documentation user_download_and_install user_getting_started user_hamiltonian user_estruct user_postproc user_other .. toctree:: :maxdepth: 2 :numbered: :caption: Technical stuff tech_dev tech_ref tech_api Indices and tables ================== * :ref:`genindex` * :ref:`modindex`