Do NOT use capital letters for propositional variables. Use:

- false for bottom
- true for top
- ^ for conjunction
- v for disjunction
- ! for negation
- -> for material implication
- => for conditional implication

CK+CEM+MP(+ID), CK+CSO(+MP+CEM) are not available.

Remember that flat CK+ID+CSO=cumulative logic C

NESCOND's performances are promising. We have compared them with the ones of CondLean's and GoalDUCK's. For the flat fragment of CK+CSO+ID we have compared NESCOND with KLMLean, a theorem prover for KLM logics. Here are some statistics from our experiments.

Description | Document |
---|---|

Test for CK: NESCOND vs CondLean vs UCK | Prolog code |

Test for extensions of CK: valid formulas | Formulas |

Test for CK+CSO+ID: NESCOND vs KLMLEan | Prolog code |

Copyright 2013 Nicola Olivetti, Gian Luca Pozzato. NESCOND 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. NESCOND 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 NESCOND. If not, see http://www.gnu.org/licenses/.