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Definition & Example

the 16 Decorated permutations of size 3
  [+,+,+]   [-,+,+]   [+,-,+]   [+,+,-]   [-,-,+]   [-,+,-]   [+,-,-]   [-,-,-]
  [+,3,2]   [-,3,2]   [2,1,+]   [2,1,-]   [2,3,1]   [3,1,2]   [3,+,1]   [3,-,1]

Properties

Additional information

References

[BS20] N. Blitvić and E. Steingrímsson, Permutations, Moments, Measures, arXiv:2001.00280

[FHL20] Shishuo Fu, Guo-Niu Han, Zhicong Lin, k-arrangements, statistics and patterns arXiv:2005.06354

[La15] T. Lam, Totally Nonnegative Grassmannian and Grassmannian Polytopes. 1 June 2015. arxiv:1506.00603

[Po06] A. Postnikov, Total positivity, Grassmannians, and networks. 27 Sep 2006. arxiv:0609764

Sage examples

Technical information for database usage


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