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most citedThe Universal Theory of Locally Universal Tracial von Neumann Algebras is not Computable

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math.OA2026

A Note on Pseudofinite W*-Probability Spaces

Jananan Arulseelan

We introduce pseudofinite W*-probability spaces. These are W*-probability spaces that are elementarily equivalent to Ocneanu ultraproducts of finite-dimensional von Neumann algebra…

math.OA20261 cited

The Universal Theory of Locally Universal Tracial von Neumann Algebras is not Computable

Jananan Arulseelan, Aareyan Manzoor

Building on Lin's breakthrough MIP = coRE and an encoding of non-local games as universal sentences in the language of tracial von Neumann algebras, we show that locally uni…

math.OA2025

Model Theory of General von Neumann Algebras II: Group Actions and Crossed Products

Jananan Arulseelan

Expanding on previous work of the author, we initiate the model theoretic study of W-dynamical systems. We axiomatize continuous weight-preserving group actions of on von N…

math.OA2025

Model Theory of General von Neumann Algebras I: Generalized Ocneanu Ultraproducts

Jananan Arulseelan

This paper collates, presents, and expands upon technology and results obtained as part of the author's PhD thesis. We generalize work done in the -finite setting by the author…

math.OA2025

Totally Bounded Elements in W*-probability Spaces

Jananan Arulseelan, Isaac Goldbring, Bradd Hart +1

We introduce the notion of a totally (-) bounded element of a W*-probability space and, borrowing ideas of Kadison, give an intrinsic characterization of the -suba…

math.OA2024

On the Elementary Equivalence of Group Factors

Jananan Arulseelan

We use techniques of distortion systems, introduced by James Hanson to show that any two elementarily equivalent infinite discrete ICC groups give rise to elementarily equivalent g…