Results 51 to 60 of about 21,443,625 (160)

Semigroup C *-algebras

, 2016
to appear as a chapter in the Book "K-Theory for Group C*-Algebras and Semigroup C*-Algebras" jointly authored with Joachim Cuntz, Siegfried Echterhoff and Guoliang ...
openaire   +2 more sources

The Global Glimm Property for C*‐algebras of topological dimension zero

Bulletin of the London Mathematical Society, Volume 58, Issue 4, April 2026.
Abstract We show that a C∗$C^*$‐algebra with topological dimension zero has the Global Glimm Property (every hereditary subalgebra contains an almost full nilpotent element) if and only if it is nowhere scattered (no hereditary subalgebra admits a finite‐dimensional representation). This solves the Global Glimm Problem in this setting.
Ping Wong Ng, Hannes Thiel, Eduard Vilalta   +2 more
wiley   +1 more source

Multipliers of C∗-algebras

Journal of Functional Analysis, 1973
AbstractFor a C∗-algebra A let M(A) denote the two-sided multipliers of A in its enveloping von Neumann algebra. A complete description of M(A) is given in the case where the spectrum of A is Hausdorff. The formula M(A ⊗α B) = M(A) ⊗α M(B) is discussed and examples are given where M(A)A is non-simple even though A is simple and separable.
Akemann, Charles A, Pedersen, Gert K, Tomiyama, Jun   +2 more
openaire   +1 more source

Some metric characterizations of commutativity in C*-algebras [PDF]

Surveys in Mathematics and its Applications
We study Le Page's theorem in the context of C*-algebras and obtain several characterizations of commutativity and centrality implied by identities or inequalities satisfied by the norm.
Florin Pop
doaj  

A note on the quasi‐local algebra of expander graphs

Bulletin of the London Mathematical Society, Volume 58, Issue 1, January 2026.
Abstract We show that the quasi‐local algebra of a coarse disjoint union of expander graphs does not contain a Cartan subalgebra isomorphic to ℓ∞$\ell _\infty$. Ozawa has recently shown that these algebras are distinct from the uniform Roe algebras of expander graphs, and our result describes a further difference.
Bruno M. Braga, Ján Špakula, Alessandro Vignati   +2 more
wiley   +1 more source

A categorical interpretation of continuous orbit equivalence for partial dynamical systems

Bulletin of the London Mathematical Society, Volume 57, Issue 12, Page 3637-3656, December 2025.
Abstract We define the orbit morphism of partial dynamical systems and prove that an orbit morphism being an isomorphism in the category of partial dynamical systems and orbit morphisms is equivalent to the existence of a continuous orbit equivalence between the given partial dynamical systems that preserves the essential stabilisers. We show that this
Gilles G. de Castro, Eun Ji Kang
wiley   +1 more source

MUMOTT: a Python package for the analysis of multi‐modal tensor tomography data

Journal of Applied Crystallography, Volume 58, Issue 5, Page 1834-1845, October 2025.
The MUMOTT Python package facilitates the analysis of small‐ and wide‐angle X‐ray scattering tensor tomography data, using CPU and GPU acceleration to simplify complex computational tasks. Designed for ease of use, extensibility and efficiency, MUMOTT aims to lower barriers to adopting tensor tomography methods within the wider research community.Small‐
Leonard C. Nielsen, Mads Carlsen, Sici Wang, Arthur Baroni, Torne Tänzer, Marianne Liebi, Paul Erhart   +6 more
wiley   +1 more source

FRAÏSSÉ LIMITS OF C*-ALGEBRAS [PDF]

The Journal of Symbolic Logic, 2016
AbstractWe realize the Jiang-Su algebra, all UHF algebras, and the hyperfinite II1factor as Fraïssé limits of suitable classes of structures. Moreover by means of Fraïssé theory we provide new examples of AF algebras with strong homogeneity properties.
Christopher J. Eagle, Ilijas Farah, Bradd Hart, Boris Kadets, Vladyslav Kalashnyk, Martino Lupini   +5 more
openaire   +3 more sources

Stability in the Cuntz semigroup of a commutative C*‐algebra [PDF]

, 2006
Let A be a C*‐algebra. The Cuntz semigroup W(A) is an analogue for positive elements of the semigroup V(A) of Murray‐von Neumann equivalence classes of projections in matrices over A. We prove stability theorems for the Cuntz semigroup of a commutative C*
Andrew S. Toms
semanticscholar   +1 more source

Masking Ability of CAD‐CAM Materials at Different Thicknesses: A Study on Color, Translucency, and Infinite Optical Thickness

Journal of Esthetic and Restorative Dentistry, Volume 37, Issue 9, Page 2134-2143, September 2025.
ABSTRACT Objective To evaluate the masking ability of different thicknesses of CAD‐CAM resin‐matrix and feldspar porcelain materials. Materials and Methods Specimens (Ø7.5 mm, thickness 0.5, 1.0, and 1.5 mm, n = 3/material) were fabricated from Lava Ultimate‐LU, Grandio Blocs‐GB, VITA Enamic‐VE, and VITA Mark II‐VM.
Bruno Arruda Mascaro, Maria Tejada‐Casado, Renata Garcia Fonseca, Juan C. Cardona, José Maurício dos Santos Nunes Reis, María M. Pérez   +5 more
wiley   +1 more source