نتایج جستجو برای: strong operator topology

تعداد نتایج: 526700  

Journal: :Journal of Mathematical Analysis and Applications 2022

We extend the usual theory of universal C*-algebras from generators and relations in order to allow some be described using strong operator topology. In particular, we can infinite sum relations. prove a property for algebras define show how Cuntz algebra isometries as well Exel-Laca Finally, give sufficient conditions when C*-algebra generated by projections partial is only norm relations, cas...

2009
M. I. Ostrovskii V. S. Shulman

Let K be an absolutely convex infinite-dimensional compact in a Banach space X . The set of all bounded linear operators T on X satisfying TK ⊃ K is denoted by G(K). Our starting point is the study of the closure WG(K) of G(K) in the weak operator topology. We prove that WG(K) contains the algebra of all operators leaving lin(K) invariant. More precise results are obtained in terms of the Kolmo...

Journal: :journal of sciences, islamic republic of iran 2011
g.h. esslamzadeh

in this article we study two different generalizations of von neumann regularity, namely strong topological regularity and weak regularity, in the banach algebra context. we show that both are hereditary properties and under certain assumptions, weak regularity implies strong topological regularity. then we consider strong topological regularity of certain concrete algebras. moreover we obtain ...

2013
Raji George T. P. Johnson

In 1965 L. A Zadeh [11] introduced fuzzy sets as a generalization of ordinary sets. After that C. L. Chang [2] introduced fuzzy topology and that led to the discussion of various aspects of L-topology by many authors. The Čech closure spaces introduced by Čech E. [1] is a generalization of the topological spaces. The theory of fuzzy closure spaces has been established by Mashhour and Ghanim [4]...

2006
Hidenori Fukaya

The overlap Dirac operator, which satisfies the Ginsparg-Wilson relation, realizes exact chiral symmetry on the lattice. It also avoids fermion doubling but its locality and smoothness are subtle. In fact, the index theorem on the lattice implies that there are certain points where the overlap Dirac operator has discontinuities. Aside from the theoretical subtleties, this non-smoothness also ra...

In this paper, we prove some fixed points properties and demiclosedness principle for a Banach operator in uniformly convex hyperbolic spaces. We further propose an iterative scheme for approximating a fixed point of a Banach operator and establish some strong and $Delta$-convergence theorems for such operator in the frame work of uniformly convex hyperbolic spaces. The results obtained in this...

Journal: :Siam Journal on Mathematical Analysis 2021

We study the dynamics of three-dimensional polaron - a quantum particle coupled to bosonic fields in quasi-classical regime. In this case are very intense and corresponding degrees freedom can be treated semiclassically. prove that such regime effective for particles is approximated by one generated time-dependent point interaction, i.e., singular perturbation Laplacian supported point. As by-p...

2004
KERI A. KORNELSON DAVID R. LARSON

Abstract. The construction of frames for a Hilbert space H can be equated to the decomposition of the frame operator as a sum of positive operators having rank one. This realization provides a different approach to questions regarding frames with particular properties and motivates our results. We find a necessary and sufficient condition under which any positive finite-rank operator B can be e...

2011
Shaobo Lin Feilong Cao

In the paper titled as “Jackson-type inequality on the sphere” 2004 , Ditzian introduced a spherical nonconvolution operator Ot,r , which played an important role in the proof of the wellknown Jackson inequality for spherical harmonics. In this paper, we give the lower bound of approximation by this operator. Namely, we prove that there are constants C1 and C2 such that C1ω2r f, t p ≤ ‖Ot,rf − ...

Journal: :bulletin of the iranian mathematical society 2015
a. muhammad s. hussain w. ul-haq

in this paper, we introduce new classes $sum_{k,p,n}(alpha ,m,lambda ,l,rho )$ and $mathcal{t}_{k,p,n}(alpha ,m,lambda ,l,rho )$ of p-valent meromorphic functions defined by using the extended multiplier transformation operator. we use a strong convolution technique and derive inclusion results. a radius problem and some other interesting properties of these classes are discussed.

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