Description of the center of the affine Temperley-Lieb algebra of type widetilde{A_N}
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affinealgebratemperley-liebcentertypevarietywidetildealgebraic
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Construction of the diagrammatic version of the affine Temperley-Lieb algebra of type $\widetilde{A_N}$ as a subring of matrices over the Laurent polynomials is given. We move towards geometrical understanding of cellular structure of the Temperley-Lieb algebra. We represent its center as a coordinate ring of the certain affine algebraic variety and describe this variety constructing its desingularization.
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