Rush–Shi's cyclic sieving conjecture for exceptional minuscule posets

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Let PP be one of the two minuscule posets associated to an exceptional Lie algebra of type EE, and let k∈Z≥0k\in\mathbb{Z}_{\geq 0}. Write PPk(P){\mathsf{PP}}^k(P) for the plane partitions of height at most kk over PP, let Ψ\Psi denote rowmotion on this set, and let fPk(q)=∑I∈PPk(P)q∣I∣f_P^k(q)=\sum_{\mathcal{I}\in{\mathsf{PP}}^k(P)}q^{|\mathcal{I}|}. Rush–Shi's conjecture. The polynomial fPkf_P^k is a cyclic sieving polynomial for the action of Ψ\Psi on PPk(P){\mathsf{PP}}^k(P). This extends the cyclic sieving phenomenon previously known for minuscule plane partitions of height at most 22 to the exceptional type EE cases for every nonnegative height.

References

Primary source

Holly Mandel and Oliver Pechenik, “Orbits of Plane Partitions of Exceptional Lie Type”, arXiv:1712.09180 (2018).

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