Diagrammatic singular Soergel bimodules

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• Hankyung Ko (Uppsala Universitet)
• Thursday 17 July 2025, 14:00-15:00
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GCLW01 - Modular Lie theory

In joint work with Ben Elias, Nicolas Libedinsky, Leonardo Patimo, we construct a basis of the morphism spacesbetween singular Soergel bimodules, analogous to Elias-Williamson’s diagrammatic basis for the regularSoergel bimodules (modelled on the algebraic ‘light leaves’ due to Libedinsky). The talk is an introduction to this diagrammatics and related combinatorics, where we also aim to draw some singular light leaves.

This talk is part of the Isaac Newton Institute Seminar Series series.

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