activity
20042026
most citedModel theory of operator algebras III: Elementary equivalence and II_1 factors

74 citations · 433 across the 68 of their papers we have counts for

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38 papers · 1 filter

math.OA2026

Ulam stability for classes of nuclear C*-algebras

Vadim Alekseev, Ilijas Farah, Andreas Thom

We study Ulam stability for approximate *-homomorphisms of C*-algebras. We prove stability results for several classes of nuclear C*-algebras with respect to von Neumann algebra ta…

math.OA2026

Set-theoretic absoluteness for analysts and separable \cstar-algebras without Choice

Bruce Blackadar, Ilijas Farah

Basic theory of separable C*-algebras can be developed without the Axiom of Choice, and it does not depend on the Continuum Hypothesis, Martin's Axiom, and other standard set-theor…

math.OA2025

Continuous Selection of Unitaries in II Factors

Ilijas Farah, Andrea Vaccaro

We prove continuous-valued analogues of the basic fact that Murray-von Neumann subequivalence of projections in II factors is completely determined by tracial evaluations. We m…

math.OA2024

Coronas and strongly self-absorbing C*-algebras

Ilijas Farah, Gábor Szabó

Let be a strongly self-absorbing -algebra. Given any separable -algebra , our two main results assert the following. If is $\mathcal…

math.OA2023

A dichotomy for central sequence algebras

Ilijas Farah, Ilan Hirshberg

We prove that the central sequence algebra of a separable C*-algebra is either subhomogeneous or non-exact, confirming a conjecture of Enders and Shulman. We also prove analogous d…

math.OA2023★ 1 cited

Quantum Expanders and Quantifier Reduction for Tracial von Neumann Algebras

Ilijas Farah, David Jekel, Jennifer Pi

We provide a complete characterization of theories of tracial von Neumann algebras that admit quantifier elimination. We also show that the theory of a separable tracial von Neuman…