Tropical reflection agrees with evacuation of tableaux

Let TSSYT(k,[n])T\in\operatorname{SSYT}(k,[n]), let θ\theta be the tropical reflection map, let τ\tau be the tropical twist map, let ch(T)\operatorname{ch}(T) be the associated dual canonical basis element, and let eva(T)\operatorname{eva}(T) be tableau evacuation.

Evacuation conjecture. For every TSSYT(k,[n])T\in\operatorname{SSYT}(k,[n]),

θ(ch(T))=ch(eva(T)),θ(T)=eva(τ1(T)).\theta(\operatorname{ch}(T))=\operatorname{ch}(\operatorname{eva}(T)),\qquad \theta(T)=\operatorname{eva}(\tau^{-1}(T)).

The conjecture connects tropical reflection with Schützenberger evacuation, both on dual canonical basis elements and on tableaux. The supplied text gives no resolution status.

Sources & referencesView supporting material

Primary source

James Drummond, Ömer Gürdoğan and Jian-Rong Li, “Tropical symmetries of cluster algebras”, arXiv:2601.19779 (2026).

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