Results 31 to 40 of about 19,963,404 (159)

Relatively hyperbolic groups are C*-simple

open access: yes, 2006
We characterize relatively hyperbolic groups whose reduced C*-algebra is simple as those, which have no non-trivial finite normal ...
Arzhantseva, G.   +5 more
core   +1 more source

C ∗ $C^{*}$ -Algebra valued fuzzy normed spaces with application of Hyers–Ulam stability of a random integral equation

open access: yesAdvances in Difference Equations, 2020
In this paper, we consider C ∗ $C^{*}$ -algebra valued fuzzy normed spaces. We study the random integral equation ( 1 2 c ) ∫ x − c d x + c d u ( γ , τ , d 0 ) d τ = u ( γ , x , d ) $(\frac{1}{2c})\int _{x-cd}^{x+cd}u(\gamma ,\tau ,d_{0})\,d\tau =u ...
R. Chaharpashlou   +3 more
doaj   +1 more source

Perfect JC-algebras

open access: yesBulletin of Mathematical Sciences, 2023
Perfect C∗-algebras were introduced by Akeman and Shultz in [Perfect C*-algebras, Mem. Amer. Math. Soc. 55(326) (1985)] and they form a certain subclass of C*-algebras determined by their pure states, and for which the general Stone–Weierstrass ...
Fatmah B. Jamjoom
doaj   +1 more source

Fuzzy Annihilator Ideals of C-Algebra

open access: yesAdvances in Fuzzy Systems, 2021
In this paper, we introduce the concept of relative fuzzy annihilator ideals in C-algebras and investigate some its properties. We characterize relative fuzzy annihilators in terms of fuzzy points.
Wondwosen Zemene Norahun   +2 more
doaj   +1 more source

Twin TQFTs and Frobenius Algebras

open access: yesJournal of Mathematics, 2013
We introduce the category of singular 2-dimensional cobordisms and show that it admits a completely algebraic description as the free symmetric monoidal category on a twin Frobenius algebra, by providing a description of this category in terms of ...
Carmen Caprau
doaj   +1 more source

Primitive Ideal Space of Ultragraph $C^*$-algebras [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2019
In this paper, we describe the primitive ideal space of the $C^*$-algebra $C^*(mathcal G)$  associated to the ultragraph $mathcal{G}$. We investigate the structure of the closed ideals of the quotient ultragraph $  C^* $-algebra  $C^*left(mathcal G/(H,S ...
Mostafa Imanfar   +2 more
doaj   +1 more source

A Note on Hilbert Modules

open access: yesپژوهش‌های ریاضی, 2021
Introduction and preliminaries Hilbert C∗-modules were firrst introduced in the work of I. Kaplansky.Hilbert C*-modules are the natural  generalization that of Hilbert spaces arising by replacing of the field of scalars C by a C∗-algebra.
Abbas Sahleh, Leila Najarpisheh
doaj  

Almost Generalized Derivation on Banach Algebras

open access: yesMathematics, 2022
We take into consideration generalized derivations. First, we study the stability of generalized derivations on Banach algebras under consideration. Then we prove some theorems involving approximate generalized derivations on Banach algebras.
Jae-Hyeong Bae   +2 more
doaj   +1 more source

C ∗ -Algebra of Cancellative Semigroupoids

open access: yesJournal of Mathematical Extension, 2009
In this paper the definition and some properties of semigroupoids are considered. Representations, tight representations, and universal representations of a cancellative semigroupoid are discussed.
B. Tabatabaie
doaj  

The Tracial Class Property for Crossed Products by Finite Group Actions

open access: yesAbstract and Applied Analysis, 2012
We define the concept of tracial 𝒞-algebra of C*-algebras, which generalize the concept of local 𝒞-algebra of C*-algebras given by H. Osaka and N. C. Phillips. Let 𝒞 be any class of separable unital C*-algebras.
Xinbing Yang, Xiaochun Fang
doaj   +1 more source

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