LLT e-positivity conjecture for circular Dyck diagrams

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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.

References

Primary source

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

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