LLT e-positivity conjecture for circular Dyck diagrams

Let ν=(a,s){\boldsymbol\nu} = (\mathbf{a},\mathbf{s}) be a circular Dyck diagram with some strict corner edges. Circular LLT e-positivity conjecture. Then Gν(x;q+1)\mathrm{G}_{\boldsymbol\nu}(\mathbf{x};q+1) is e\mathrm{e}-positive with unimodal coefficients. This is the paper's main conjecture, supported by several results, but remains open.

Sources & referencesView supporting material

Primary source

Per Alexandersson and Greta Panova, “LLT polynomials, chromatic quasisymmetric functions and graphs with cycles”, arXiv:1705.10353 (2017).

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