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Now showing items 31-40 of 53
A study on summability factors of infinite series
(
Qatar University
, 1997 , Article)
A new theorem concerning N,p q , summability factors of infinite series are deduced.
On the direct problem and scattering data for a singular system of differential Equations with discontinuous coefficients
(
Qatar University
, 1996 , Article)
A system of Sturm-Liouiville differential equations of order n with a density matrix function is considered. The direct problem of the considered system is studied and hence the scattering data of the problem is obtained.
The P-Center And The P-Median Problems In Graphs With Small Number ' Of Spanning Trees
(
Qatar University
, 1996 , Article)
In this paper, we will describe some algorithms and give their complexity as following:
(1) The algorithm for finding a dominating set of radius r in a vertex-weighted graph with small number of spanning tress.
The ...
Krein's Method For Singular Mixed Problems
(
Qatar University
, 1993 , Article)
In this paper, the spectral relations of the Fredholm integral equation of the first kind for the mixed problems with singular kernel are obtained.
A Note On Pre-J-Group Rings
(
Qatar University
, 1991 , Article)
Given an associative ring R satisfying a°'b = Ba" for any pair a and b of its elements, is being a positive integer, and a group G satisfying x""' = y"~1, we give a sufficient and necessary condition on the group ring GR ...
Filtered Dehomogenization Theory For The Micro-structure sheves OY
(
Qatar University
, 1999 , Article)
In this work we study the theory of dehomogenization at the level of filtered sheaves using the micro-structure sheaves. For the sheaf of quantum section the results are still true.
S — Compactness Via Ideals
(
Qatar University
, 1991 , Article)
Compactness modulo as an ideal has not been widely studied. Many new sorts of weak compactness have been introduced to topological spaces in the last twenty years but have not been studied using ideals. So, the main aim ...
صفات وكفايات معلم رياضيات المرحلة الابتدائية بدولة قطر
(
Qatar University
, 1993 , Article)
Two Forms Of The Backlund Transformation Of A Third Order Differential Equation
(
Qatar University
, 1996 , Article)
Two explicit forms of Backlund transformation of third order dispersive differential equation are derived. The method of derivation depends on the use of a transformation that couples the equation with its modified one.
Approximating the Distribution of Quadratic Forms Using Orthogonal Polynomials
(
Qatar University
, 1999 , Article)
In this paper we propose some techniques to approximate the distribution of quadratic forms in normal random variables. The first two techniques will be based on orthogonal polynomials, namely; the Hermitte and Laguerre ...