Geodesic
AN ALGORITHM TO CONSTRUCT THE LE DIAGRAM ASSOCIATED TO A GRASSMANN NECKLACE
Glasgow mathematical journal, Tome 62 (2020) no. 1, pp. 85-91

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DOI

Le diagrams and Grassmann necklaces both index the collection of positroids in the nonnegative Grassmannian Gr≥0(k, n), but they excel at very different tasks: for example, the dimension of a positroid is easily extracted from its Le diagram, while the list of bases of a positroid is far more easily obtained from its Grassmann necklace. Explicit bijections between the two are, therefore, desirable. An algorithm for turning a Le diagram into a Grassmann necklace already exists; in this note, we give the reverse algorithm. 
AGARWALA, SUSAMA; FRYER, SIÂN. AN ALGORITHM TO CONSTRUCT THE LE DIAGRAM ASSOCIATED TO A GRASSMANN NECKLACE. Glasgow mathematical journal, Tome 62 (2020) no. 1, pp. 85-91. doi: 10.1017/S001708951800054X
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