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Related papers: Fra\"{i}ss\'e theory in operator algebras

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We survey the model theory of operator systems and C$^*$-algebras.

Operator Algebras · Mathematics 2022-10-11 Thomas Sinclair

We begin the systematic model theoretic study of $\mathrm{C}^*$-algebras using the tools of continuous logic.

Logic · Mathematics 2018-04-17 I. Farah , B. Hart , M. Lupini , L. Robert , A. Tikuisis , A. Vignati , W. Winter

In this paper, we present a slightly modified version of Fra\"iss\'e theory which is used in a paper by Christopher J. Eagle, Ilijas Farah, Bradd Hart, Boris Kadets, Vladyslav Kalashnyk and Martino Lupini (arXiv:1411.4066) and another by…

Logic · Mathematics 2016-11-22 Shuhei Masumoto

We transcribe a portion of the theory of extensions of C*-algebras to general operator algebras. We also include several new general facts about approximately unital ideals in operator algebras and the C*-algebras which they generate.

Operator Algebras · Mathematics 2015-05-13 David P. Blecher , Maureen K. Royce

We realize the Jiang-Su algebra, all UHF algebras, and the hyperfinite II$_{1}$ factor as Fra\"iss\'e limits of suitable classes of structures. Moreover by means of Fra\"iss\'e theory we provide new examples of AF algebras with strong…

In this article we give a short and informal overview of some aspects of the theory of C*- and von Neumann algebras. We also mention some classical results and applications of these families of operator algebras.

Operator Algebras · Mathematics 2013-04-12 Fernando Lledó

We continue our study of operator algebras with and contractive approximate identities (cais). In earlier papers we have introduced and studied a new notion of positivity in operator algebras, with an eye to extending certain C*-algebraic…

Operator Algebras · Mathematics 2014-07-08 David P. Blecher , Charles John Read

We present a topos-theoretic interpretation of (a categorical generalization of) Fraisse's construction in model theory, with applications to countably categorical theories.

Category Theory · Mathematics 2008-12-01 Olivia Caramello

We introduce a new class of operator algebras -- tracially complete C*-algebras -- as a vehicle for transferring ideas and results between C*-algebras and their tracial von Neumann algebra completions. We obtain structure and classification…

In this exposition, I discuss several developments in the theory of vertex operator algebras, and I include motivation for the definition.

Quantum Algebra · Mathematics 2007-06-28 James Lepowsky

We develop \emph{Fra\"iss\'e theory}, namely the theory of \emph{Fra\"iss\'e classes} and \emph{Fra\"iss\'e limits}, in the context of metric structures. We show that a class of finitely generated structures is Fra\"iss\'e if and only if it…

Logic · Mathematics 2014-09-09 Itaï Ben Yaacov

Examples of operator algebras with involution include the operator $*$-algebras occurring in noncommutative differential geometry studied recently by Mesland, Kaad, Lesch, and others, several classical function algebras, triangular matrix…

Operator Algebras · Mathematics 2019-02-20 David P. Blecher , Zhenhua Wang

We introduce a version of logic for metric structures suitable for applications to C*-algebras and tracial von Neumann algebras. We also prove a purely model-theoretic result to the effect that the theory of a separable metric structure is…

Logic · Mathematics 2013-07-16 Ilijas Farah , Bradd Hart , David Sherman

In this master thesis, I discuss how the theory of operator algebras, also called operator theory, can be applied in quantum computer science.

Logic in Computer Science · Computer Science 2015-10-23 Mathys Rennela

In the setting of modern mathematical logic and model theory, classification theory has been one of the landmark achievements of the field. Likewise, the classification of UHF-algebras and AF-algebras were substantial contributions to the…

Operator Algebras · Mathematics 2019-07-15 Patrick Fraser

We begin a program of generalizing basic elements of the theory of comparison, equivalence, and subequivalence, of elements in C*-algebras, to the setting of more general algebras. In particular, we follow the recent lead of Lin, Ortega,…

Operator Algebras · Mathematics 2012-02-09 David P. Blecher , Matthew Neal

We continue our study of operator algebras with contractive approximate identities (cais). In earlier papers we have introduced and studied a new notion of positivity in operator algebras, with an eye to extending certain $C^*$-algebraic…

Operator Algebras · Mathematics 2013-09-17 David P. Blecher , Charles John Read

In this paper, we give a self-contained and quite elementary proof that the class of all dimension drop algebras together with their distinguished faithful traces forms a Fra\"iss\'e class with the Jiang-Su algebra as its limit. We also…

Operator Algebras · Mathematics 2016-02-02 Shuhei Masumoto

The objectives of this research work which is intimately related to pattern discovery and management are threefold: (i) handle the problem of pattern manipulation by defining operations on patterns, (ii) study the problem of enriching and…

Databases · Computer Science 2009-02-25 Rokia Missaoui , Leonard Kwuida , Mohamed Quafafou , Jean Vaillancourt

We introduce a Fra\"iss\'e theory for abstract Cuntz semigroups akin to the theory of Fra\"iss\'e categories developed by Kubi\'s. In particular, we show that any (Cuntz) Fra\"iss\'e category has a unique Fra\"iss\'e limit which is both…

Operator Algebras · Mathematics 2023-09-07 Laurent Cantier , Eduard Vilalta
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