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math.OA2026
A disintegration theorem for non-second-countable etale groupoids
Sergey Neshveyev
We give a self-contained account of a version of Renault's disintegration theorem for (twisted) C-algebras of not necessarily Hausdorff étale groupoids that can be covered by c…
math.OA2026
The ideal structure of Exel-Pardo algebras and their higher rank analogues
Johannes Christensen, Sergey Neshveyev
Given a pseudo-free self-similar action of a countable group on a countable directed graph with amenable stabilizers of the vertices, we identify the exact conditions under…
math.OA2026
Kohn--Nirenberg quantization of the affine group and related examples
Pierre Bieliavsky, Victor Gayral, Sergey Neshveyev +1
We show how to construct unitary dual -cocycles for a class of semidirect products that exhibit many similarities with the affine group ${\rm Aff}(V)=\GL(V)\ltimes V$ of a finit…