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Combinatorics of Positroids
Abstract : Recently Postnikov gave a combinatorial description of the cells in a totally-nonnegative Grassmannian. These cells correspond to a special class of matroids called positroids. There are many interesting combinatorial objects associated to a positroid. We introduce some recent results, including the generalization and proof of the purity conjecture by Leclerc and Zelevinsky on weakly separated sets.
Cited literature [8 references]
https://hal.inria.fr/hal-01185389
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Submitted on : Thursday, August 20, 2015 - 11:07:12 AM
Last modification on : Wednesday, June 26, 2019 - 2:48:03 PM
Long-term archiving on: : Wednesday, April 26, 2017 - 9:47:17 AM
Contributor : Coordination Episciences Iam Connect in order to contact the contributor
Submitted on : Thursday, August 20, 2015 - 11:07:12 AM
Last modification on : Wednesday, June 26, 2019 - 2:48:03 PM
Long-term archiving on: : Wednesday, April 26, 2017 - 9:47:17 AM
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