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Projecting an extended formulation for mixed-integer covers on bipartite graphs

Conforti, Michele, Wolsey, Laurence A. and Zambelli, Giacomo (2010) Projecting an extended formulation for mixed-integer covers on bipartite graphs. Mathematics of Operations Research, 35 (3). pp. 603-623. ISSN 0364-765X

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Identification Number: 10.1287/moor.1100.0454

Abstract

We consider the mixed-integer version of bipartite vertex cover. This is equivalent to a mixed-integer network dual model, introduced recently, that generalizes several mixed-integer sets arising in production planning. We derive properties of inequalities that are valid for the convex hull of the mixed-integer bipartite covers by projecting an extended formulation onto the space of the original variables. This permits us to give a complete description of the facet-inducing inequalities of the double mixing set and of the continuous mixing set with flows, two mixed-integer sets that generalize several models studied in the literature.

Item Type: Article
Official URL: http://mor.journal.informs.org/
Additional Information: © 2010 Informs
Divisions: Management
Subjects: Q Science > QA Mathematics
Date Deposited: 21 Jan 2011 12:30
Last Modified: 13 Sep 2024 22:52
URI: http://eprints.lse.ac.uk/id/eprint/31539

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