3 papers
math.OA2026
Relative invariant subalgebra rigidity for Thompson's group
Tattwamasi Amrutam, Artem Dudko
We prove that Thompson's group satisfies the relative invariant subalgebra rigidity property with respect to its commutator subgroup: every von Neumann subalgebra of tha…
math.OA2025
Invariant subalgebras rigidity for von Neumann algebras of groups arising as certain semidirect products
Tattwamasi Amrutam, Artem Dudko, Yongle Jiang +1
We study the ISR (von Neumann invariant subalgebra rigidity) property for certain discrete groups arising as semidirect products from algebraic actions on certain 2-torsion groups,…
math.OA2025
A character approach to the ISR property
Artem Dudko, Yongle Jiang
We develop a character approach to study the invariant von Neumann subalgebras rigidity property (abbreviated as the ISR property) introduced in Amrutam-Jiang's work. First, we int…