Results 21 to 30 of about 19,038 (272)

Central neurocytoma

open access: yesJournal of Clinical Neuroscience, 2012
Central neurocytomas (CN) are rare intraventricular tumors with prominent neuronal differentiation. CN commonly arise in the lateral ventricles of young adults who predominantly present with raised intracranial pressure. Few studies have described the clinical, pathological, and radiological features of these tumors, and those that have are typically ...
Haihui, Chen   +3 more
openaire   +7 more sources

A note on Jordan left *-centralizers on prime and semiprime rings with involution

open access: yesJournal of Taibah University for Science, 2017
The aim of this note is to give alternative and short proofs for some results to Ali et al. in [3] by using the relationship between the concepts of Jordan left *-centralizer and right centralizer on a 2-torsion free semiprime rings endowed with ...
M.S. Tammam El-Sayiad   +2 more
doaj   +1 more source

Locally finite groups in which every non-cyclic subgroup is self-centralizing [PDF]

open access: yes, 2016
Locally finite groups having the property that every non-cyclic subgroup contains its centralizer are completely classified.Comment: 12 ...
Delizia, Costantino   +4 more
core   +2 more sources

Green’s Relations in the Commutative Centralizers of Monounary Algebras

open access: yesDemonstratio Mathematica, 2015
The paper deals with the monounary algebras for which the second centralizer equals the first centralizer. We describe Green’s relations on the semigroup C, where C is the centralizer of such algebra.
Jakubíková-Studenovská D.   +1 more
doaj   +1 more source

Breaking points in centralizer lattices [PDF]

open access: yes, 2018
In this note, we prove that the centralizer lattice ${\mathfrak C}(G)$ of a group $G$ cannot be written as a union of two proper intervals. In particular, it follows that ${\mathfrak C}(G)$ has no breaking point.
Tărnăuceanu, Marius
core   +3 more sources

On Jordan Triple α-*Centralizers Of Semiprime Rings

open access: yesDemonstratio Mathematica, 2014
Let R be a 2-torsion free semiprime ring equipped with an involution *. An additive mapping T : R→R is called a left (resp. right) Jordan α-*centralizer associated with a function α: R→R if T(x2)=T(x)α(x*) (resp. T(x2)=α(x*)T(x)) holds for all x ∊ R.
Ashraf Mohammad   +2 more
doaj   +1 more source

Normalizers and centralizers of subgroups in non-Abelian groups of small order [PDF]

open access: yesКомпьютерные исследования и моделирование, 2012
By applying the computer program, which is created by authors, we obtain the exact representation of normalizers and centralizers of all nontrivial subgroups in non-Abelian groups G under the condition |G|20.
Ilya Anatolievih Shilin   +1 more
doaj   +1 more source

Central Hypoadrenalism [PDF]

open access: yesThe Journal of Clinical Endocrinology & Metabolism, 2014
Central hypoadrenalism is a frequent complication of pituitary and hypothalamic pathology and is associated with increased morbidity and mortality. Optimal exogenous glucocorticoid use is dependent on the use of appropriate diagnostic tests and careful assessment of the clinical response to glucocorticoid replacement therapy.A PubMed search for the ...
R K, Crowley   +3 more
openaire   +2 more sources

Is a hollow centralizer necessary when using a polished, tapered, cemented femoral stem?: A randomized, controlled RSA study of 60 hips with 10 years of follow-up

open access: yesActa Orthopaedica, 2017
Background and purpose — A tapered, polished and collarless stem is normally equipped with a hollow centralizer to prevent the stem from becoming end-bearing in the cement as the stem subsides. In a randomized clinical trial, we evaluated such a stem (MS-
Erik Weber   +3 more
doaj   +1 more source

Jordan ?-Centralizers of Prime and Semiprime Rings

open access: yesمجلة بغداد للعلوم, 2010
The purpose of this paper is to prove the following result: Let R be a 2-torsion free ring and T: R?R an additive mapping such that T is left (right) Jordan ?-centralizers on R.
Baghdad Science Journal
doaj   +1 more source

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