21 citations · 97 across the 18 of their papers we have counts for
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math.DS2026
The No-Core Principle for Stationary Actions and Ends of Stationary Random Subgroups
Yair Hartman, Nadav Kalma
We prove a No-Core Principle for stationary actions of countable groups. Namely, if a Borel set intersects almost every orbit in finitely many points and has positive measure, then…
math.OA2026
Stabilizer Subgroups and the Simplicity of Reduced Crossed Products
Yair Hartman, Mehrdad Kalantar
Given a minimal action of a countable group on a compact space , we prove that if the reduced crossed product is simple, then there ex…
math.PR2026
On the inclusion of bounded harmonic functions of random walks
Yair Hartman, Aranka Hrušková, Omer Segev
We investigate the conditions under which the space of bounded harmonic functions of a probability measure on a group is contained in that of another measure . We establ…