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Positroids, clusters, and Catalan numbers
Algebraic Geometry and Number Theory| Speaker: | Thomas Lam, U. Mich. |
| Location: | Zoom |
| Start time: | Tue, Feb 23 2021, 11:00AM |
Positroid varieties are subvarieties of the Grassmannian obtained by intersecting cyclic rotations of Schubert varieties. I will talk about a recent result relating the (singular) cohomology of positroid varieties and to q,t-Catalan theory. I will also explain some features of the cohomology of the more general class of cluster varieties.
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