The elliptic Hall algebra quotient conjecture for the punctured torus Homflypt skein

From papers

Let Sk(T2D2)\mathrm{Sk}(T^2-D^2) be the Homflypt skein algebra of the punctured torus, and let Eσ,σˉ\mathcal{E}_{\sigma,\bar\sigma} be the elliptic Hall algebra with generators uxu_{\mathbf{x}} indexed by xZ2\mathbf{x}\in\mathbb{Z}^2. A simple closed curve has a homology class xZ2\mathbf{x}\in\mathbb{Z}^2. Elliptic Hall algebra quotient conjecture. There is a surjective algebra map

Sk(T2D2)Eσ,σˉ.\mathrm{Sk}(T^2-D^2)\twoheadrightarrow\mathcal{E}_{\sigma,\bar\sigma}.

This map takes a simple closed curve of homology class x\mathbf{x} to the generator uxEσ,σˉu_{\mathbf{x}}\in\mathcal{E}_{\sigma,\bar\sigma} used by Schiffmann and Vasserot. The conjecture would identify the elliptic Hall algebra as a quotient of the larger punctured-torus Homflypt skein algebra and explain how its second parameter arises from the kernel of the map.

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Sources & referencesView supporting material

Primary source

Hugh Morton and Peter Samuelson, “DAHAs and skein theory”, arXiv:1909.11247 (2021).

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