Let $A$ be a positive (semidefinite) operator on complex Hilbert space $\mathcal{H}$ and let $\mathbb{A}=\left(\begin{array}{cc} A & O O A \end{array}\right).$ We obtain upper lower bounds for the $A$-Davis-Wielandt radius of semi-Hilbertian operators, which generalize improve existing ones. also $\mathbb{A}$-Davis-Wielandt $2 \times 2$ matrices. Finally, we determine exact value two matr...

In the survey of the activity of the kidneys by nuclear medical imaging, determining the region of interest (ROI) by the operator is an important factor. The current study aimed to obtain an automatic method to determine the ROI of kidney to reduce the error of manual method of the operator. In this survey, the equations obtained through the thresholding method are performed to semi-automation ...

Let be the Lie algebra of semi-direct sum real vector space and sets all matrices. In this paper, a Frobenius functional is constructed in order for to dimension 8. Moreover, bilinear form corresponding symplectic. Then obtained symplectic induces left-symmetric structures on . other words, algebra. particular, we give formulas its structure explicitely. The case higher type are still an open p...

Mylohyoid bridging (MB) is a non-metrical variant of the human mandible. The incidence and types of MB were investigated in 264 mandibles (edentulous 116, semi-dentulous 90 and dentulous 58). No mandible showed a complete type of MB, although 19 (7.2%) mandibles had a partial type. These were classified into two subtypes: distal partial (DP; Type I) and proximal partial (PP; Type II), depending...

In this paper, we introduce the concept of a quasi-radical semi prime submodule. Throughout work, assume that is commutative ring with identity and left unitary R- module. A proper submodule called (for short Q-rad-semiprime), if for , ,and then . Where intersection all submodules

The New Far-Right is often equated with fascism within mainstream political discourse. Although there are fascistic elements of the far-right generally, typified by its adoption liberal values and support democracy. Some argue that this a strategy to distance themselves from fascism, while others their pro-liberal position semi-liberal. This article aims understand whether individuals British s...

Abstract. Let R be a 2-torsion free ring with identity. In this paper, first we prove that any Jordan left derivation (hence, any left derivation) on the full matrix ringMn(R) (n 2) is identically zero, and any generalized left derivation on this ring is a right centralizer. Next, we show that if R is also a prime ring and n 1, then any Jordan left derivation on the ring Tn(R) of all n×n uppe...