# Directory `graphics/pgf/contrib/prooftrees`

%% Copyright 2019 Clea F. Rees % % This work may be distributed and/or modified under the % conditions of the LaTeX Project Public License, either version 1.3 % of this license or (at your option) any later version. % The latest version of this license is in % http://www.latex-project.org/lppl.txt % and version 1.3 or later is part of all distributions of LaTeX % version 2005/12/01 or later. % % This work has the LPPL maintenance status `maintained'. % % The Current Maintainer of this work is Clea F. Rees. % % This work consists of all files listed in manifest.txt. This package supports drawing tableaux (proof trees) of the kind often used in introductory logic classes, especially those aimed at students without strong mathemtical backgrounds. Hodges (1991) is one example of a text which uses this system. When teaching such a system it is especially useful to annotate the tree with line numbers, justifications and explanations of branch closures. prooftrees provides a single environment, prooftree, and a variety of tools for annotating, customising and highlighting such trees. A cross-referencing system is provided for trees which cite line numbers in justifications for proof lines or branch closures. prooftrees is based on Forest and, hence, TikZ. The package requires version 2.1+ of Forest for expected results and will not work with version 1. The author is certain that some of her beliefs are false, but sure that her belief that prooftrees has bugs is not among them. Clea F. Rees ReesC21 <at> cardiff <dot> ac <dot> uk 2019/09/30 vim: set nospell:

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## prooftrees – Forest-based proof trees (symbolic logic)

The package supports drawing proof trees of the kind often used in introductory logic classes, especially those aimed at students without strong mathematical backgrounds. Hodges (1991) is one example of a text which uses this system. When teaching such a system it is especially useful to annotate the tree with line numbers, justifications and explanations of branch closures.

`prooftrees` provides a single environment, `prooftree`,
and a variety of tools for annotating, customising and highlighting
such trees. A cross-referencing system is provided for trees
which cite line numbers in justifications for proof lines
or branch closures.

prooftrees is based on forest and, hence, TikZ. The package requires version 2.0.2 of Forest for expected results and will not work with version 1.

Package | prooftrees |

Version | 0.8 svn 9582 2023-06-18 |

Licenses | The LaTeX Project Public License 1.3 |

Copyright | 2016–2023 Clea F. Rees |

Maintainer | Clea F. Rees |

Contained in | TeX Live as prooftrees MiKTeX as prooftrees |

Topics | PGF TikZ Tree Logic |

See also | forest |