نتایج جستجو برای: vector lattice

تعداد نتایج: 287231  

2005
V. M. Braun

We present a quenched lattice calculation of f V /fV , the coupling of vector mesons to the tensor current normalized by the vector meson decay constant. The chirally improved lattice Dirac operator, which allows us to reach small quark masses, is used. We put emphasis on analyzing the quark mass dependence of f V /fV and find only a rather weak dependence. Our results at the ρ and φ masses agr...

1998
B. D. Jones

Lattice NRQCD with leading finite lattice spacing errors removed is used to simulate heavy-heavy vector decay constants. Quenched simulations are performed at three values of the coupling and fifteen values of the quark mass. The improved gauge action with plaquettes and rectangles is used. Landau link improvement is used throughout. “Perturbative” and nonperturbative meson masses are compared....

2006
Charalambos D. Aliprantis Owen Burkinshaw

In 1983 L. E. Jones exhibited a surprising example of a weakly Pareto optimal al­ location in a two consumer pure exchange economy that failed to be supported by prices. In this example the price space is not a vector lattice (Riesz space). Inspired by Jones' example, A. Mas-Colell and S. F. Richard proved that this pathological phenomenon cannot happen when the price space is a vector lattice....

Journal: :IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences 2023

This paper shows that upper bounds on the coefficients of shortest vector a lattice can be represented using smallest eigenvalue Gram matrix for lattice, obtains its distribution high-dimensional random Goldstein-Mayer and applies it to determine percentage zeros coefficient vector.

2009
A. G. Kusraev

The paper extends homogeneous functional calculus on vector lattices. It is shown that the function of elements of a relatively uniformly complete vector lattice can naturally be defined if the positively homogeneous function is defined on some conic set and is continuous on some closed convex subcone. An interplay between Minkowski duality and homogeneous functional calculus leads to the envel...

Journal: :Optics express 2011
Seita Iwahashi Yoshitaka Kurosaka Kyosuke Sakai Kyoko Kitamura Naoki Takayama Susumu Noda

We have successfully generated vector beams with higher-order polarization states using photonic-crystal lasers. We have analyzed and designed lattice structures that provide cavity modes with different symmetries. Fabricated devices based on these lattice structures produced doughnut-shaped vector beams, with symmetries corresponding to the cavity modes. Our study enables the systematic analys...

2007
M. F. SMILEY

Introduction. We propose to investigate here the consequences of the identity of each pair chosen from three important generalizations of the relation of betweenness on a line, namely, algebraic betweenness [l, p. 27 J, metric betweenness [3, p. 36], and lattice betweenness [7, Part I I ] . We shall also find an interpretation of metric betweenness in the Banach space of all continuous function...

Journal: :IEEE Trans. Communications 1997
J. Pan

This paper is the extension of two-stage vector quantization–(spherical) lattice vector quantization (VQ–(S)LVQ) recently introduced by Pan and Fischer [1]. First, according to high resolution quantization theory, generalized vector quantization–lattice vector quantization (G-VQ–LVQ) is formulated in order to release the constraint of the spherical boundary for the second-stage lattice vector q...

2005
Ramesh Neelamani Sanjeeb Dash Richard G. Baraniuk

We study ”nearly orthogonal” lattice bases, or bases where the angle between any basis vector and the linear subspace spanned by the other basis vectors is greater than π 3 radians. We show that a nearly orthogonal lattice basis always contains a shortest lattice vector. Moreover, if the lengths of the basis vectors are “nearly equal”, then the basis is the unique nearly orthogonal lattice basi...

2004
Ram Zamir Meir Feder

AbstructWe present several results regarding the properties of a random vector, uniformly distributed over a lattice cell. This random vector is the quantization noise of a lattice quantizer at high resolution, or the noise of a dithered lattice quantizer at all distortion levels. We find that for the optimal lattice quantizers this noise is wide-sense-stationary and white. Any desirable noise ...

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