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Now showing items 11-19 of 19
The Productively Lindelöf Property In The Remainders Of Topological Spaces
(Scientific Technical Research Council Turkey-Tubitak, 2018)
A topological space X is called productively Lindelof if X x Y is Lindelof for every Lindelof space Y. We study with remainders and investigate topological spaces with productively Lindelof remainders.
More On Sequential Order Of Compact Scattered Spaces
(Scientific Technical Research Council Turkey-Tubitak, 2018)
The proper forcing axiom is shown to imply that a compact scattered sequential space with scattering height at most omega(1) must have sequential order at most omega.
On The Use Of Imputation Methods For Missing Data In Estimation Of Population Mean Under Two-Phase Sampling Design
(Hacettepe Univ, Fac Sci, 2018)
Non-response is an unavoidable feature in sample surveys and it needs to be carefully handled to avoid the biased estimates of population characteristics/parameters. Imputation is one of the latest fascinating methods which ...
Quasipolarity of Special Morita Context Rings
(Univ Miskolc Inst Math, 2018)
In this paper, we introduce a new concept of Morita context rings which we call special Morita context rings. We determine the conditions under which this kind of rings are quasipolar. We use special Morita context rings ...
Almost Unbiased Estimation Procedures Of Population Mean In Two-Occasion Successive Sampling
(Hacettepe Univ, Fac Sci, 2018)
The objective of this paper is to construct some unbiased estimators of the current population mean in two-occasion successive sampling. Utilizing the readily available information on an auxiliary variable on both occasions, ...
Solving Large Scale Systems Of Linear Equations With A Stabilized Lanczos-Type Algorithms Running On A Cloud Computing Platform
(Hacettepe Univ, Fac Sci, 2018)
The Lanczos-type algorithms for Systems of Linear Equations (SLEs) are efficient but fragile. A number of ways to resolve this issue have been suggested. But, the problem is still not fully sorted, in our view. Here, we ...
Pseudo Projective Modules Which are not Quasi Projective and Quivers
(Mathematical Soc Rep China, 2018)
In this paper we construct pseudo projective modules which are not quasi projective over non-commutative perfect rings. To do it we construct finite dimensional quiver algebras over the field Z(2). The modules which are ...
Primitive Submodules, Co-Semisimple and Regular Modules
(Mathematical Soc Rep China, 2018)
In this paper, primitive submodules are defined and various properties of them are investigated. Some characterizations of co-semisimple modules are given and several conditions under which co-semisimple and regular modules ...
Some New Types Of Associated Curves In Euclidean 3-Space
(Ovidius Univ Press, 2018)
In this paper, we introduce the concept of D-direction curve and C-direction curve of a given curve using the alternative frame {N, C, W} in Euclidean 3-space. Furthermore, we define a (N, C) plane curve, a (N, W) plane ...