Maxim Kontsevich - Matrices filled by variables, from posets to Coxeter groups, and beyond

Last year at CAP2023 I gave a talk about a class of matrices filled by variables, whose eigenvalues are linear forms
in the variables. The construction was based on finite posets. I'll speak about a generalization to convex sets in general reflection groups, and even to the case where there is no group at all.
Maxim Kontsevich (IHES)
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