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- W4300546110 abstract "We introduce the simple extension complexity of a polytope P as the smallest number of facets of any simple (i.e., non-degenerate in the sense of linear programming) polytope which can be projected onto P. We devise a combinatorial method to establish lower bounds on the simple extension complexity and show for several polytopes that they have large simple extension complexities. These examples include both the spanning tree and the perfect matching polytopes of complete graphs, uncapacitated flow polytopes for non-trivially decomposable directed acyclic graphs, hypersimplices, and random 0/1-polytopes with vertex numbers within a certain range. On our way to obtain the result on perfect matching polytopes we generalize a result of Padberg and Rao's on the adjacency structures of those polytopes. To complement the lower bounding techniques we characterize in which cases known construction techniques yield simple extensions." @default.
- W4300546110 created "2022-10-03" @default.
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- W4300546110 date "2013-11-14" @default.
- W4300546110 modified "2023-09-27" @default.
- W4300546110 title "Simple Extensions of Polytopes" @default.
- W4300546110 doi "https://doi.org/10.48550/arxiv.1311.3470" @default.
- W4300546110 hasPublicationYear "2013" @default.
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