/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ /* */ /* This file is part of the program and library */ /* SCIP --- Solving Constraint Integer Programs */ /* */ /* Copyright 2002-2022 Zuse Institute Berlin */ /* */ /* Licensed under the Apache License, Version 2.0 (the "License"); */ /* you may not use this file except in compliance with the License. */ /* You may obtain a copy of the License at */ /* */ /* http://www.apache.org/licenses/LICENSE-2.0 */ /* */ /* Unless required by applicable law or agreed to in writing, software */ /* distributed under the License is distributed on an "AS IS" BASIS, */ /* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */ /* See the License for the specific language governing permissions and */ /* limitations under the License. */ /* */ /* You should have received a copy of the Apache-2.0 license */ /* along with SCIP; see the file LICENSE. If not visit scipopt.org. */ /* */ /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ /**@file sepa_disjunctive.h * @ingroup SEPARATORS * @brief disjunctive cut separator * @author Tobias Fischer * @author Marc Pfetsch * * We separate disjunctive cuts for two term disjunctions of the form \f$x_1 = 0 \vee x_2 = 0\f$. They can be generated * directly from the simplex tableau. For further information, we refer to@n * "A complementarity-based partitioning and disjunctive cut algorithm for mathematical programming problems with * equilibrium constraints"@n * Júdice, J.J., Sherali, H.D., Ribeiro, I.M., Faustino, A.M., Journal of Global Optimization 36(1), 89–114 (2006) * * Cut coefficients belonging to integer variables can be strengthened by the 'monoidal cut strengthening' procedure, see@n * "Strengthening cuts for mixed integer programs"@n * Egon Balas, Robert G. Jeroslow, European Journal of Operational Research, Volume 4, Issue 4, 1980, Pages 224-234 */ /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/ #ifndef __SCIP_SEPA_DISJUNCTIVE_H__ #define __SCIP_SEPA_DISJUNCTIVE_H__ #include "scip/def.h" #include "scip/type_retcode.h" #include "scip/type_scip.h" #ifdef __cplusplus extern "C" { #endif /** creates the disjunctive cut separator and includes it in SCIP * * @ingroup SeparatorIncludes */ SCIP_EXPORT SCIP_RETCODE SCIPincludeSepaDisjunctive( SCIP* scip /**< SCIP data structure */ ); #ifdef __cplusplus } #endif #endif