The KK-Kohnert rule for dual stable Grothendieck polynomials

Let α\alpha be a weak composition, let Jα(β)J_{\alpha}^{(\beta)} be the generating function for diagrams produced from Skyline(α)\operatorname{Skyline}(\alpha) by the KK-Kohnert rule, with each diagram weighted by βg(D)xD\beta^{g(D)}x^D, where g(D)g(D) is the number of gg's in DD and xDx^D is its column weight. Let Ωα\Omega_{\alpha} denote the dual stable Grothendieck polynomial associated with α\alpha. The KK-Kohnert conjecture.

Jα(1)=Ωα.J_{\alpha}^{(-1)}=\Omega_{\alpha}.

This conjecture extends Kohnert's rule from key polynomials to the dual stable Grothendieck basis by incorporating marked, unmovable gg's. The source provides no resolution or evidence of a proof, so its status remains open.

Sources & referencesView supporting material

Primary source

Colleen Ross and Alexander Yong, “Combinatorial rules for three bases of polynomials”, arXiv:1302.0214 (2013).

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