Results 61 to 70 of about 1,325 (162)

Rings in Which Every Element Is a Sum of a Nilpotent and Three 7‐Potents

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2024, Issue 1, 2024.
In this article, we define and discuss strongly S3,7 nil‐clean rings: every element in a ring is the sum of a nilpotent and three 7‐potents that commute with each other. We use the properties of nilpotent and 7‐potent to conduct in‐depth research and a large number of calculations and obtain a nilpotent formula for the constant a. Furthermore, we prove
Yanyuan Wang   +2 more
wiley   +1 more source

Isolation and in vitro Characterization of Mesenchymal Stem Cells Derived from the Pulp Tissue of Human Third Molar Tooth [PDF]

open access: yesIranian Journal of Medical Sciences, 2010
Background: It is still controversial that the stem cells isolatedfrom human dental pulp meets the criteria for mesenchymalstem cells (MSCs). The aim of the present study wasto examine whether or not they are MSCs, or are distinct stemcells population ...
Sourena Vahabi   +4 more
doaj  

Orthogonal tripotent matrices

open access: yes
In this paper, we present different characterizations of tripotent orthogonal matrices (i.e., A^3 = A = A^* ) in terms of matrix equations, integer powers of AA^* and A^*A, average of A, A^*, and A^{\dagger}, rank of matrices, and trace of matrices. We study certain properties of this class of matrices.
Mei, Tan, Zuo, Kezheng, Jiang, Wanlin
openaire   +2 more sources

Local triple derivations on real C*-algebras and JB*-triples [PDF]

open access: yes, 2013
We study when a local triple derivation on a real JB*-triple is a triple derivation. We find an example of a (real linear) local triple derivation on a rank-one Cartan factor of type I which is not a triple derivation.
Alexis Molino   +3 more
core  

Linear isometries between real JB*-triples and C*-algebras

open access: yes, 2013
Let $T: A\to B$ be a (not necessarily surjective) linear isometry between two real JB$^*$-triples. Then for each $a\in A$ there exists a tripotent $u_a$ in the bidual, $B'',$ of $B$ such that \begin{enumerate}[$(a)$] \item $\{u_a,T(\{f,g,h\}),u_a\}=\{u_a,
Apazoglou, Maria, Peralta, Antonio M.
core   +1 more source

A new characterization of semi-tripotent rings

open access: yesJournal of Algebra and Its Applications
We give a comprehensive study of the so-called semi-tripotent rings obtaining their new and nontrivial characterization as well as a complete description in terms of sums and products of some special elements. Particularly, we explore in-depth when a group ring is semi-tripotent. Our results somewhat supply those established by Koşan et al.
Ahmad Moussavi   +3 more
openaire   +2 more sources

Local triple derivations on C*-algebras and JB*-triples

open access: yes, 2013
In a first result we prove that every continuous local triple derivation on a JB$^*$-triple is a triple derivation. We also give an automatic continuity result, that is, we show that local triple derivations on a JB$^*$-triple are continuous even if not ...
Burgos, María   +2 more
core   +1 more source

Enhancing Ectopic Bone Formation in Canine Masseter Muscle by Loading Mesenchymal Stem Cells onto Natural Bovine Bone Minerals. [PDF]

open access: yesIranian Journal of Veterinary Surgery, 2007
Objectives- To assess the ectopic bone formation in canine masseter muscle following the implantation of the natural bovine bone minerals (NBM) loaded with canine mesenchymal stem cells (MSCs). Design- Experimental study.
Mohamadreza Baghaban Eslaminejad   +5 more
doaj  

Regenerative Medicine for the Aging Brain [PDF]

open access: yes, 2014
In the central nervous system, cholinergic and dopaminergic (DA) neurons are among the cells most susceptible to the deleterious effects of age. Thus, the basal forebrain cholinergic system is known to undergo moderate neurodegenerative changes during ...
Goya, Rodolfo Gustavo   +3 more
core   +2 more sources

A Peirce decomposition for generalized Jordan triple systems of second order

open access: yes, 2002
A tripotent of a generalized triple system of second order defines a decomposition of the space of the space which consist of 10 components. It gives a generalization of the Peirce decomposition n for the Jordan triple system which consists in general of
Kamiya, Noriaki, Kantor, Issai
core   +1 more source

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