output
20142026
most citedSeminorm and numerical radius inequalities of operators in semi-Hilbertian spaces

79 citations

Showing 2018Show all

6 papers · 1 filter

math.OA2018

Orthogonally -Jensen mappings on -modules

Ali Zamani

We investigate the representation of the so-called orthogonally -Jensen mappings acting on -modules. More precisely, let be a unital -algebra with the u…

math.FA2018★ 21 cited

Norm-parallelism and the Davis--Wielandt radius of Hilbert space operators

A. Zamani, M. S. Moslehian, M. T. Chien +1

We present a necessary and sufficient condition for the norm-parallelism of bounded linear operators on a Hilbert space. We also give a characterization of the Birkhoff--James orth…

astro-ph.CO2018★ 13 cited

Generation of Circular Polarization of CMB via Polarized Compton Scattering

Ali Vahedi, Jafar Khodagholizadeh, Rohoollah Mohammadi +1

The standard scenario of cosmology predicts a measurable amount for linear polarization of the Cosmic Microwave Background radiation (CMB) via Thomson scattering, while through thi…

cs.CG2018

NCARD: Improving Neighborhood Construction by Apollonius Region Algorithm based on Density

Shahin Pourbahrami, Leyli Mohammad Khanli, Sohrab Azimpour

Due to the increased rate of information in the present era, local identification of similar and related data points by using neighborhood construction algorithms is highly signifi…

math.OA2018★ 1 cited

Characterization of numerical radius parallelism in -algebras

Ali Zamani

Let be the numerical radius of an element in a -algebra . First, we prove several numerical radius inequalities in . Particularly, we pr…

gr-qc2018★ 2 cited

Curvature and topology dependency of the cosmological spectra

Ali A. Asgari, Amir H. Abbassi, Jafar Khodagholizadeh

In this article we investigate dependency of the adiabatic and entropy spectral indices of the cosmological perturbations on the geometry and topology of the background universe. O…