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A Proof of Rubey's Lattice Conjecture

Billey, Sara C. et al.
arXiv (All) · Papers
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05a0505e1406a07combinatorics
In 2011, Rubey generalized chute and ladder moves on the set of reduced pipe dreams for a permutation $w$ and conjectured that the induced poset on reduced pipe dreams is a lattice. In this paper, we prove this conjecture. Our key tool is a new type of move operation $\mathcal{M}_{ij}$, defined as a
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