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math.RT2026

On Braverman-Kazhdan's asymptotic Hecke algebra for inner forms of

Stefan Dawydiak

We study Braverman-Kazhdan's asymptotic Hecke algebra for inner forms of -adic . We show that and the property for a -rep…

math.RT2026

Standard modules of affine Hecke algebras

Stefan Dawydiak

Let be a connected reductive group defined and split over a non-archimedean local field . We give a new geometric proof of a special case of a recent theorem of Solleveld. N…

math.RT2026

A positivity property in the based ring of the lowest two-sided cell

Stefan Dawydiak

Let be an extended affine Weyl group and and be the corresponding affine and asymptotic Hecke algebras with standard bases and $\{t_w\…

math.RT2025

The asymptotic Hecke algebra and rigidity

Stefan Dawydiak

We reprove the surjectivity statement of Braverman-Kazhdan's spectral description of Lusztig's asymptotic Hecke algebra in the context of -adic groups. The proof is based on…

math.RT2025

Denominators in Lusztig's asymptotic Hecke algebra via the Plancherel formula

Stefan Dawydiak

Let be an extended affine Weyl group, be the corresponding affine Hecke algebra over the ring $\mathbb{C}[\mathbf{q}^\frac{1}{2}, \mathbf{q}^{-\frac{1}{2}}…

math.RT2024

A coherent categorification of the based ring of the lowest two-sided cell

Stefan Dawydiak

We give a partial coherent categorification of , the based ring of the lowest two sided cell of an affine Weyl group, equipped with a monoidal functor from the category of coh…