Results 21 to 30 of about 35,099 (156)
On the Ideals of C∗-Algebra Generated by a Family of Partial Isometries and Multipliers [PDF]
Учёные записки Казанского университета: Серия Физико-математические науки, 2015 C∗-subalgebra of the algebra of all bounded operators on the Hilbert space l2 generated by the multiplier algebra and a family of partial isometries satisfying some relations is covered in the paper.
A.Yu. Kuznetsova, E.V. Patrin
doaj
Sphere and projective space of a C*-algebra with a faithful state
Demonstratio Mathematica, 2019 Let 𝒜 be a unital C*-algebra with a faithful state ϕ. We study the geometry of the unit sphere 𝕊ϕ = {x ∈ 𝒜 : ϕ(x*x) = 1} and the projective space ℙϕ = 𝕊ϕ/𝕋.
Antunez Andrea C.
doaj +1 more source
Strength of convergence and multiplicities in the spectrum of a C*-dynamical system
, 2006 We consider separable $C^*$-dynamical systems $(A,G,\alpha)$ for which the induced action of the group $G$ on the spectrum $\hat A$ of the $C^*$-algebra $A$ is free.
An Huef, Astrid, Robert Archbold
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The Similarity Degree of Some C*-algebras
, 2012 We define the class of weakly approximately divisible unital C*-algebras and show that this class is closed under direct sums, direct limits, any tensor product with any C*-algebra, and quotients. A nuclear C*-algebra is weakly approximately divisible if
Hadwin, Don, Li, Weihua
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, 2008 The Ahtekar-Isham C*-algebra known from Loop Quantum Gravity is the algebra of continuous functions on the space of (generalized) connections with a compact structure Lie group.
Andrzej Okołów +4 more
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On Birkhoff – James and Roberts orthogonality
Special Matrices, 2018 In this paper we present some recent results on characterizations of the Birkhoff-James and the Roberts orthogonality in C*-algebras and Hilbert C*-modules.
Arambašic Ljiljana, Rajic Rajna
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MATHEMATICA SCANDINAVICA, 1993 We show that if \(A\) and \(B\) are \(\sigma\)-unital, projective \(C^*\)- algebras (star-homomorphisms into \(C^*\)-algebras quotients lift to star-homomorphisms) then \(A\oplus B\) and \(M_ n(A)\) are projective. Corresponding results are proven for semiprojectivity. A corollary is that elements \(h_ 1,\dots, h_ n\) in a quotient \(C/I\) satisfying \[
openaire +2 more sources
A new look at C*-simplicity and the unique trace property of a group
, 2016 We characterize when the reduced C*-algebra of a group has unique tracial state, respectively, is simple, in terms of Dixmier-type properties of the group C*-algebra.
A. Boudec Le +6 more
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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 +6 more
wiley +1 more source