نتایج جستجو برای: left derivation

تعداد نتایج: 325796  

2005
HARRY MANDELBAUM

Ballstocad(liographic studies were done on 28 subjects with left bundle branch block and on 18 subjects with right bundle branch block. The influence of ventricular as nchronism, and the predominance of left or right ventricular disease, upon the derivation and interpretation of the ballistocar(liograsn, is discussed. The ballistocardiogram was found to be a valuable objective guide in the dete...

2017
Guangyu An Jiankui Li GUANGYU AN JIANKUI LI

Let A be a unital algebra and M be a unital A-bimodule. A characterization of generalized derivations and generalized Jordan derivations from A into M, through zero products or zero Jordan products, is given. Suppose that M is a unital left A-module. It is investigated when a linear mapping from A into M is a Jordan left derivation under certain conditions. It is also studied whether an algebra...

2008
Junbo Li Yucai Su

X iv :0 80 1. 22 07 v1 [ m at h. R A ] 1 5 Ja n 20 08 The derivation algebra and automorphism group of the twisted Schrödinger-Virasoro algebra Junbo Li, Yucai Su ∗)Department of Mathematics, Shanghai Jiao Tong University, Shanghai 200240, China †)Department of Mathematics, Changshu Institute of Technology, Changshu 215500, China ‡)Department of Mathematics, University of Science and Technology...

2000
Daniel R. Farkas Edward L. Green Eduardo N. Marcos

When an algebra is graded by a group, any additive character of the group induces a diagonalizable derivation of the ring. This construction is studied in detail for the case of a path algebra modulo relations and its fundamental group. We describe an injection of the character group into the first cohomology group following Assem-de la Peña. Rather general conditions are determined, in this co...

Journal: :Circulation research 1953
H M GELLER M BRANDFONBRENER C J WIGGERS

The derivation of coronary sinus flow during increased pulmonary and right ventricular pressures was resubmitted to experimental study. The primary reduction and subsequent augmentation in coronary flow following pulmonary artery constriction and the persistence of a greater flow after release preclude the concept of a variable contribution via thebesian channels from the right ventricular cavi...

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 2004
Piotr J Slomka Hidetaka Nishina Daniel S Berman Xingping Kang John D Friedman Sean W Hayes Usaf E Aladl Guido Germano

UNLABELLED In myocardial perfusion SPECT (MPS), ischemia is typically quantified as the difference between stress and rest defect sizes obtained by separate comparisons with stress and rest normal limits. Such an approach is not optimal because images are not compared directly with each other and a complex set of stress and rest normal limits is required. METHODS We developed a fully automati...

Journal: :Annals of Global Analysis and Geometry 2023

The aim of this paper is to construct left-invariant Einstein pseudo-Riemannian Sasaki metrics on solvable Lie groups. We consider the class $\mathfrak z$-standard algebras dimension $2n+3$, which are in one-to-one correspondence with pseudo-K\"ahler nilpotent $2n$ endowed a compatible derivation, suitable sense. characterize structures and derivations giving rise Sasaki-Einstein metrics. class...

Let H be an infinite--dimensional Hilbert space and K(H) be the set of all compact operators on H. We will adopt spectral theorem for compact self-adjoint operators, to investigate of higher derivation and higher Jordan derivation on K(H) associated with the following cauchy-Jencen type functional equation 2f(frac{T+S}{2}+R)=f(T)+f(S)+2f(R) for all T,S,Rin K(H).

Hamidreza Reisi, Majid Gordji

Let H be an innite dimensional Hilbert space and K(H) be the set of all compactoperators on H. We will adopt spectral theorem for compact self-adjoint operators, to investigate ofhigher derivation and higher Jordan derivation on K(H) associated with the following Cauchy-Jensentype functional equation 2f((T + S)/2+ R) = f(T ) + f(S) + 2f(R) for all T, S, R are in K(...

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