نتایج جستجو برای: positive relation
تعداد نتایج: 930467 فیلتر نتایج به سال:
Introduction and purpose: In the process of development, retirement is a stage of beginning for important potential changes in life and this stage effect on quality life of the retirements. So, present study with the aim of investigating prediction of quality of life through locus of control, meaning of life and marital relationships was performed on retirements of Nahanavand of Iran. Materi...
Introduction: The prevalence of sexual disorders is high among women with multiple sclerosis in the world. Sexual dysfunction is considered as one of the effective psychological factors on self-concept sexual function. The present study was conducted to evaluate the relation between sexual self-concept and sexual distress in women with multiple sclerosis. Methods: The present descriptive corre...
in this paper we define the notions of ultra and involution ideals in bck-algebras. then we get the relation among them and other ideals as (positive) implicative, associative, commutative and prime ideals. specially, we show that in a bounded implicative bck-algebra, any involution ideal is a positive implicative ideal and in a bounded positive implicative lower bck-semilattice, the notions of...
A general classification of linear differential and finite-difference operators possessing a finite-dimensional invariant subspace with a polynomial basis (the generalized Bochner problem) is given. The main result is that any operator with the above property must have a representation as a polynomial element of the universal enveloping algebra of some algebra of differential (difference) opera...
The relation between positivity of principal minors, sign symmetry and stability of matrices is studied. It is shown that for sign symmetric matrices, having positive principal minors is equivalent to stability, to D-stability, and to having a positive scaling into a stable matrix. The relation between spectra of matrices some of whose powers have positive principal minors and matrices whose co...
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