نتایج جستجو برای: bounded central approximate identity

تعداد نتایج: 714018  

Journal: :international journal of political science 0

this article  studyies political identity of dagestani people in the north caucasus. at the first, i have defined a true theory of political identity, which is compatible with dagestanis. this theory defines political identity in two aspects: grounded aspect, which is geography and history, and the social-environmental aspect, which includes culture (especially religion, costumes and ethnicity)...

Journal: :Journal of Differential Equations 2021

In this paper, we introduce the concept of central periodic points a linear system as which lies on orbits starting and ending at subgroup system. We show that set is bounded if only compact. Moreover, admits control containing identity element G then, points, coincides with its interior.

2008
ALEXANDER A. KATZ

It has been established by Inoue that a complex locally C*-algebra with a dense ideal posesses a bounded approximate identity which belonges to that ideal. It has been shown by Fritzsche that if a unital complex locally C*-algebra has an unbounded element then it also has a dense one-sided ideal. In the present paper we obtain analogues of the aforementioned results of Inoue and Fritzsche for r...

1998
Viviane Baladi

We give suucient conditions to approximate the \nonessential" spectrum of a bounded operator L acting on a Banach space B by part of the spectra of a sequence of compact (or nite rank) operators L j = (Id ? j)L(Id ? j), where Id ? j is a suitable family of uniformly bounded operators which approach the identity. (By nonessential spectrum we mean here all the spectrum outside of the disc of radi...

2009
MARTEN WORTEL

Let X be a non-degenerate left Banach module over a normed algebra A having a bounded approximate left identity. We show that, if A is a left ideal of a larger algebra, then this representation can be extended to a representation of the larger algebra. Based on this result, we study in detail the existence and properties of representations of the various centralizer algebras of A which are comp...

2000
Thomas Vils Pedersen T. V. Pedersen

We prove that a homogeneous Banach space B on the unit circle T can be embedded as a closed subspace of a dual space ΞB contained in the space of bounded Borel measures on T in such a way that the map B → ΞB defines a bijective correspondence between the class of homogeneous Banach spaces on T and the class of prehomogeneous Banach spaces on T. We apply our results to show that the algebra of a...

2009
MARTEN WORTEL

Let X be a non-degenerate left Banach module over a normed algebra A having a bounded approximate left identity. We show that, if A is a left ideal of a larger algebra, then this representation can be extended to a representation of the larger algebra. Based on this result, we study in detail the existence and properties of representations of the various centralizer algebras of A which are comp...

2007
Doron Levy

We consider a family of high-order, weighted essentially non-oscillatory central schemes (CWENO) for approximating solutions of one-dimensional hyperbolic systems of conservation laws. We are interested in the behavior of the total variation (TV) of the approximate solution obtained with these methods. Our numerical results suggest that even though CWENO methods are not total variation diminish...

Journal: :journal of linear and topological algebra (jlta) 0
a mahmoodi kebriya department of mathematics, faculty of science, islamic azad university, central tehran branch, tehran, iran

we survey the recent investigations on (bounded, sequential) approximate connesamenability and pseudo-connes amenability for dual banach algebras. we will discuss thecore problems concerning these notions and address the signi cance of any solutions to themto the development of the eld.

Journal: :علوم 0
کاظم حق نژاد آذر kazem haghnejad azar university of mohghegh ardabilدانشگاه محقق اردبیلی

in this paper, we study the arens regularity properties of module actions and we extend some proposition from baker, dales, lau and others into general situations. we establish some relationships between the topological centers of module actions and factorization properties of them with some results in group algebras. in 1951 arens shows that the second dual of banach algebra endowed with the e...

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