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arXiv · 1701.02316

Extremal weight projectors

Hoel Queffelec·Paul Wedrich
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Abstract

We introduce a quotient of the affine Temperley-Lieb category that encodes all weight-preserving linear maps between finite-dimensional sl(2)-representations. We study the diagrammatic idempotents that correspond to projections onto extremal weight spaces and find that they satisfy similar properties as Jones-Wenzl projectors, and that they categorify the Chebyshev polynomials of the first kind. This gives a categorification of the Kauffman bracket skein algebra of the annulus, which is well adapted to the task of categorifying the multiplication on the Kauffman bracket skein module of the torus.

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BibTeXRIS

Hoel Queffelec, Paul Wedrich. 2017-01-09. Extremal weight projectors. https://arxiv.org/abs/1701.02316

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