We define diagrammatic extremal weight projectors for đ€đ© N (Nâ„2), a refinement of JonesâWenzl projectors and Kuperbergâs clasps. As by-products, we obtain compatible diagrammatic presentations of the representation categories of đ€đ© N and its Cartan subalgebra, and a categorification of power-sum symmetric polynomials.
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Queffélec et al. (2024) studied this question.
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