Combinatorial formulas for ⅃-coordinates in a totally nonnegative Grassmannian, extended abstract, extended abstract
Postnikov constructed a decomposition of a totally nonnegative Grassmannian $(Gr _{kn})_≥0$ into positroid cells. We provide combinatorial formulas that allow one to decide which cell a given point in $(Gr _{kn})_≥0$ belongs to and to determine affine coordinates of the point within this cell. This...
में बचाया:
| मुख्य लेखक: | |
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| स्वरूप: | Artigo |
| भाषा: | Inglês |
| प्रकाशित: |
Discrete Mathematics & Theoretical Computer Science
2009-01-01
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| श्रृंखला: | Discrete Mathematics & Theoretical Computer Science |
| विषय: | |
| ऑनलाइन पहुंच: | https://dmtcs.episciences.org/2706/pdf |
| टैग: |
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