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Facets for the single node fixed-charge network set with a node set-up variable

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Abstract

We consider a variant of the well-known Single Node Fixed-Charge Network (SNFCN) set where a set-up variable is associated with the node, indicating whether the node is open or not. This set arises as a relaxation of several practical mixed integer problems. We relate the polyhedral structure of this variant with the polyhedral structure of the SNFCN set. We show that in the presence of the node set-up variable new facet-defining inequalities appear and establish the relation between the new family of inequalities with the flow cover inequalities. For the constant capacitated case we provide a full polyhedral description of the convex hull of the given set.

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Acknowledgments

This work was supported by FEDER funds through COMPETE and by Portuguese funds through CIDMA and FCT within project PEst-C/MAT/UI4106/2011 with COMPETE number FCOMP-01-0124-FEDER- 022690.

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Authors and Affiliations

  1. Department of Mathematics and CIDMA, University of Aveiro, Aveiro, Portugal

    Agostinho Agra & Mahdi Doostmohammadi

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  1. Agostinho Agra
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  2. Mahdi Doostmohammadi
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Correspondence to Agostinho Agra.

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Agra, A., Doostmohammadi, M. Facets for the single node fixed-charge network set with a node set-up variable. Optim Lett 8, 1501–1515 (2014). https://doi.org/10.1007/s11590-013-0677-7

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  • DOI: https://doi.org/10.1007/s11590-013-0677-7

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