The strengthened orbit-interval conjecture for Bruhat-irreducible permutations

From papers

Let wSnw \in \mathfrak{S}_n be Bruhat irreducible, and let O\mathcal{O} denote the orbit of ee under graph automorphisms of Γ(w)\Gamma(w). Define

v(w)w0(DL(w))AR(w)w0(DL(w)DR(w))AL(w)w0(DR(w)).v(w) \coloneqq w_0(D_L(w))\cdot A_R(w) \cdot w_0(D_L(w)\cap D_R(w)) \cdot A_L(w)\cdot w_0(D_R(w)).

Strengthened orbit-interval conjecture. Then O=[e,v(w)]\mathcal{O}=[e,v(w)]. This is presented as a strengthening of the orbit-interval conjecture; its status is not resolved in the supplied text.

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Sources & referencesView supporting material

Primary source

Christian Gaetz and Yibo Gao, “On automorphisms of undirected Bruhat graphs”, arXiv:2204.09174 (2022).

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