نتایج جستجو برای: cauchy schwarz inequality

تعداد نتایج: 70355  

Journal: :Electronic Journal of Linear Algebra 2023

In this paper, a von Neumann-type inequality is studied on an Eaton triple $ (V,G,D) $, where V real inner product space, G compact subgroup of the orthogonal group O (V) and D \subset closed convex cone. By using structure triple, refinement shown. special case = ( ) Cauchy-Schwarz obtained.

2017
Paul Garrett

Among all linear operators on Hilbert spaces, the compact ones (defined below) are the simplest, and most closely imitate finite-dimensional operator theory. In addition, compact operators are important in practice. We prove a spectral theorem for self-adjoint compact operators, which does not use broader discussions of properties of spectra, only using the Cauchy-Schwarz-Bunyakowsky inequality...

2016
A. S. Shumovsky Tran Quang

2014 We consider the problem of resonance fluorescence from N two-level atoms interacting with an intense cavity mode. The novel results for the spectral and statistical properties of the fluorescence field, which are quite different from collective resonance fluorescence in a free space, are obtained. The correlation, anti-correlation between spectrum components and violation of the Cauchy-Sch...

2000
Roger A. Horn

Using a quasilinear representation for unitarily invariant norms, we prove a basic inequality: Let A = L X X M be positive semideenite, where X 2 M m;n. Then k jX j p k 2 kL p k kM p k for all p > 0 and all unitarily invariant norms k k. We show how several inequalities of Cauchy-Schwarz type follow from this bound and obtain a partial analog of our results for l p norms.

Journal: :Physical review letters 2012
K V Kheruntsyan J-C Jaskula P Deuar M Bonneau G B Partridge J Ruaudel R Lopes D Boiron C I Westbrook

The Cauchy-Schwarz (CS) inequality-one of the most widely used and important inequalities in mathematics-can be formulated as an upper bound to the strength of correlations between classically fluctuating quantities. Quantum-mechanical correlations can, however, exceed classical bounds. Here we realize four-wave mixing of atomic matter waves using colliding Bose-Einstein condensates, and demons...

2008
EBERHARD MAYERHOFER E. MAYERHOFER

We introduce a concept of causality in the framework of generalized pseudo-Riemannian Geometry in the sense of J.F. Colombeau and establish the inverse Cauchy-Schwarz inequality in this context. As an application, we prove a dominant energy condition for some energy tensors as put forward in Hawking and Ellis’s book “The large scale structure of space-time”. Our work is based on a new character...

2014
Paul Garrett

Among all linear operators on Hilbert spaces, the compact ones (defined below) are the simplest, and most closely imitate finite-dimensional operator theory. In addition, compact operators are important in practice. We prove a spectral theorem for self-adjoint compact operators, which does not use broader discussions of properties of spectra, only using the Cauchy-Schwarz-Bunyakowsky inequality...

1994
JOSEPH E. PASCIAK

In this paper, we provide uniform estimates for V-cycle algorithms with one smoothing on each level. This theory is based on some elliptic regularity but does not require a smoother interaction hypothesis (sometimes referred to as a strengthened Cauchy Schwarz inequality) assumed in other theories. Thus, it is a natural extension of the full regularity V-cycle estimates provided by Braess and H...

2011
Feng Cui Shijun Yang

It is well known that a continuous linear functional is bounded, and finding the bound or norm of a continuous linear functional is a fundamental task in functional analysis. Recently, in light of the Taylor formula and the Cauchy-Schwarz inequality, Gavrea and Ivan in 1 obtained an inequality for the continuous linear functionalL satisfying 1.1 . In order to state their result, we need some mo...

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