Soham Chakraborty

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20242026

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3 papers · 1 filter

math.OA2025

On ergodicity of linear actions on $R^{n}$ and factoriality of group von Neumann algebras

Soham Chakraborty, Chinmay Tamhankar

We give some natural conditions on actions of discrete countable groups on abelian locally compact groups of Lie type that imply factoriality of the group von Neumann algebras of t…

math.OA2024

Factoriality of groupoid von Neumann algebras

Tey Berendschot, Soham Chakraborty, Milan Donvil +1

We give a characterisation of factoriality of the groupoid von Neumann algebra $L (G)$ associated to a discrete measured groupoid $(G, I^¼)$ . We introduce the noti…

math.OA2024

A type III $_{1}$ factor with the smallest outer automorphism group

Soham Chakraborty

The canonical modular homomorphism provides an embedding of $R$ into the outer automorphism group Out( $M$ ) of any type III $_{1}$ factor $M$ . We provide an explicit constru…

On ergodicity of linear actions on Rn and factoriality of group von Neumann algebras

Factoriality of groupoid von Neumann algebras

A type III1​ factor with the smallest outer automorphism group

On ergodicity of linear actions on $R^{n}$ and factoriality of group von Neumann algebras

A type III $_{1}$ factor with the smallest outer automorphism group