Simple extensions of polytopes
Simple extensions of polytopes
复制标题
多面体的简单扩展
DOI:
10.1007/s10107-015-0885-2
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发表时间:
2015
影响因子:
2.7
通讯作者:
Matthias Walter
中科院分区:
文献类型:
--
作者:
Volker Kaibel;Matthias Walter
We introduce thesimple extension complexityof a polytopeas the smallest number of facets of any simple (i.e., non-degenerate in the sense of linear programming) polytope which can be projected onto. 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. In addition to the material in the extended abstract (Kaibel and Walter in Integer programming and combinatorial optimization. Lecture Notes in Computer Science, vol 8494. Springer, Berlin, 2014) we include omitted proofs, supporting figures, and an analysis of known upper bounding techniques.
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DOI:
10.1016/j.orl.2007.09.003
发表时间:
2008-05
期刊:
Oper. Res. Lett.
影响因子:
--
作者:
D. Bienstock
通讯作者:
D. Bienstock
DOI:
10.1090/dimacs/001
发表时间:
1996-03
期刊:
--
影响因子:
--
作者:
A. Schrijver
通讯作者:
A. Schrijver
影响因子:
1.1
作者:
S. Pokutta;M. Vyve
通讯作者:
M. Vyve
影响因子:
1.7
作者:
G. Gallo;C. Sodini
通讯作者:
C. Sodini
影响因子:
1.7
作者:
Kanstantsin Pashkovich
通讯作者:
Kanstantsin Pashkovich