http://www.saber.ula.ve/handle/123456789/4525 2026-05-02T02:28:49Z 2026-05-02T02:28:49Z Körpinar, Talat Turhan, Essin http://www.saber.ula.ve/handle/123456789/33933 2018-03-15T03:56:31Z 2011-10-20T21:18:17Z

New representations of focal curves in the special o−Ricci symmetric Para-Sasakian Manifold P Körpinar, Talat; Turhan, Essin In this paper, we study matrix representations of focal curves in terms of biharmonic curves in the special three-dimensional o−Ricci symmetric para-Sasakian manifold P. We construct new parametric equations of focal curves in terms of matrix representations in the special three-dimensional o −Ricci symmetric para-Sasakian manifold P.

2011-10-20T21:18:17Z Körpinar, Talat Ergüt, Mahmut Turhan, Essin http://www.saber.ula.ve/handle/123456789/33931 2018-03-15T03:56:13Z 2011-10-20T21:11:57Z

Frenet equations of biharmonic curves in terms of exponential maps in the special 3-dimensional Kenmotsu manifold Körpinar, Talat; Ergüt, Mahmut; Turhan, Essin In this article, we study matrix representation of biharmonic curves in 3-dimensional Kenmotsu manifold. We characterize Frenet frame of the biharmonic curves in terms of their curvature and torsion in special 3-dimensional Kenmotsu manifold K.

2011-10-20T21:11:57Z Körpinar, Talat Turhan, Essin Asil, Vedat http://www.saber.ula.ve/handle/123456789/33929 2018-03-15T03:55:53Z 2011-10-20T21:03:53Z

Matrix representation for involute curves of biharmonic curves in terms of exponential maps in the special three-dimensional o-Ricci Symmetric Para-Sasakian Manifold P Körpinar, Talat; Turhan, Essin; Asil, Vedat In this paper, we study involute curve of biharmonic curve in the special three-dimensional o-Ricci symmetric para-Sasakian manifold P. We obtain matrix representation for involute curve of biharmonic curve in terms of curvature and torsion of biharmonic curve in the special three-dimensional Á¡Ricci symmetric para-Sasakian manifold P.

2011-10-20T21:03:53Z Körpinar, Talat Altay, Gülden Turhan, Essin http://www.saber.ula.ve/handle/123456789/33927 2018-03-15T03:55:32Z 2011-10-20T20:26:31Z

New inextensible flows of tangent developable surfaces in Euclidian 3-space E3 Körpinar, Talat; Altay, Gülden; Turhan, Essin In this paper, we study inextensible flows of tangent developable surfaces in Euclidean 3-space E3. We obtain results for minimal tangent developable surfaces in Euclidean 3-space E3.

2011-10-20T20:26:31Z Körpinar, Talat Turhan, Essin Asil, Vedat http://www.saber.ula.ve/handle/123456789/33895 2018-03-15T03:54:00Z 2011-10-17T22:03:54Z

Frenet equations of biharmonic curves in terms of exponential maps in the special three-dimensional o-Ricci symmetric para-sasakian manifold P Körpinar, Talat; Turhan, Essin; Asil, Vedat In this paper, we study biharmonic curves in the special three-dimensional o-Ricci Symmetric Para-Sasakian Manifold P. Moreover, we construct matrix representation of biharmonic curves in terms of exponential maps in the special three-dimensional o-Ricci symmetric para-Sasakian manifold P. Finally we obtain Frenet equations of biharmonic curves in terms of exponential maps in the special three-dimensional o-Ricci symmetric para-Sasakian manifold P.

2011-10-17T22:03:54Z Faisal, Imran Darus, Maslina Siregar, Saibah http://www.saber.ula.ve/handle/123456789/33893 2018-03-15T03:53:42Z 2011-10-17T21:53:38Z

A study of certain new subclasses defined in the space of analytic functions Faisal, Imran; Darus, Maslina; Siregar, Saibah An attempt has been made to introduce certain new subclasses of analytic function bounds by some differential operator also define in the space of analytic functions. We study and investigate various inclusion properties of these classes. Some interesting applications of integral operators are also considered.

2011-10-17T21:53:38Z Faisal, Imran Darus, Maslina http://www.saber.ula.ve/handle/123456789/33892 2018-03-15T03:53:20Z 2011-10-17T21:47:56Z

Application of a new family of functions on the space of analytic functions Faisal, Imran; Darus, Maslina In this paper we investigate a family of integral operators defined on the space of analytic functions. By making use of these novel integral operators we give some applications of the new families of analytic functions on the same space associated with quasi-Hadamard product in the unit disk U.

2011-10-17T21:47:56Z Körpinar, Talat Turhan, Essin Ergüt, Mahmut http://www.saber.ula.ve/handle/123456789/33889 2018-03-15T03:53:01Z 2011-10-17T21:32:55Z

Dual spacelike elastic biharmonic curves with spacelike principal normal according to dual Bishop frames D3 1 Körpinar, Talat; Turhan, Essin; Ergüt, Mahmut In this paper, we study dual spacelike elastic biharmonic curves with spacelike principal normal in dual Lorentzian space D3 1.

2011-10-17T21:32:55Z Masrouri, Naser Yayli, Yusuf Faroughi, M. H. Mirshafizadeh, M. http://www.saber.ula.ve/handle/123456789/33886 2018-03-15T03:52:41Z 2011-10-17T20:44:47Z

Comments on differentiable over function of split quaternions Masrouri, Naser; Yayli, Yusuf; Faroughi, M. H.; Mirshafizadeh, M. The theory of mathematical analysis over split quaternions is formulated in a closest possible analogy to the usual theory of analytic functions of a complex variable. After reviewing split quaternion algebra via an isomorphic 4 £ 4 matrix representation, a different definition is given to partial derivatives involving split quaternions. This takes care of the ambiguity involved in the no commutative properties of split quaternions. A closely analogous condition for analyticity of functions of a split quaternion variable is found. The analogy with complex variables is illustrated for both the derivative.

2011-10-17T20:44:47Z Afaf A. Ali Abubaker Darus, Maslina http://www.saber.ula.ve/handle/123456789/33479 2018-03-15T03:40:58Z 2011-07-01T00:00:00Z

Linear operator defined by lambda function for certain analytic functions Afaf A. Ali Abubaker; Darus, Maslina For analytic function f in the open unit disc U, a linear operator defined by lambda function is introduced. The object of the present paper is to discuss some properties for I¹;sf(z) belonging to some classes by applying Jack’s lemma.

2011-07-01T00:00:00Z Faisal, Imran Khan, Ashfaq http://www.saber.ula.ve/handle/123456789/33478 2018-03-15T03:40:37Z 2011-07-01T00:00:00Z

A study of meromorphically starlike and convex functions Faisal, Imran; Khan, Ashfaq In the present paper we introduce and study certain new subclasses of starlike and convex functions in the domain of meromorphic functions. Moreover we discuss coefficient inequalities, growth and distortion theorems, radii of starlikeness and convexity and convex linear combinations for the functions belonging to the newly introduced.

2011-07-01T00:00:00Z Faisal, Imran Shareef, Zahid Darus, Maslina http://www.saber.ula.ve/handle/123456789/33475 2018-03-15T03:39:50Z 2011-06-30T00:00:00Z

A study of a new subclass of multivalent analytic functions Faisal, Imran; Shareef, Zahid; Darus, Maslina After introducing a new linear differential operator, we introduce and study certain new subclasses of analytic and multivalent functions in the open unit disk. Some inclusion relationships also discussed in particular with reference to an integral operator.

2011-06-30T00:00:00Z Körpinar, Talat Ergüt, Mahmut Turhan, Essin http://www.saber.ula.ve/handle/123456789/33473 2018-03-15T03:39:29Z 2011-06-30T00:00:00Z

Spacelike biharmonic general helices with timelike normal in the lorentzian group of rigid motions E(2) Körpinar, Talat; Ergüt, Mahmut; Turhan, Essin In this paper, we study spacelike biharmonic general helices in the Lorentzian group of rigid motions E(2). We characterize the spacelike biharmonic general helices in terms of their curvature and torsion in the Lorentzian group of rigid motions E(2).

2011-06-30T00:00:00Z Körpinar, Talat Turhan, Essin Jebril, Iqbal H. http://www.saber.ula.ve/handle/123456789/33471 2018-03-15T03:39:08Z 2011-06-30T00:00:00Z

On characterization bertrand mate of timelike biharmonic curves in the lorentzian Heis3 Körpinar, Talat; Turhan, Essin; Jebril, Iqbal H. In this paper, we study non-geodesic timelike biharmonic curves and we construct parametric equations for Bertrand mate of timelike biharmonic curves in the Lorentzian Heisenberg group Heis

2011-06-30T00:00:00Z Körpinar, Talat Altay, Gülden Turhan, Essin http://www.saber.ula.ve/handle/123456789/33030 2018-03-15T03:25:25Z 2011-06-30T00:00:00Z

Characterization inextensible flows of developable surfaces associated focal curve of spacelike curve with timelike binormal in E31 Körpinar, Talat; Altay, Gülden; Turhan, Essin In this paper, we study inextensible flows of developable surfaces associated with focal curves of spacelike curves with timelike binormal in Minkowski 3-space E3 1 . We show that if flow of this developable surface is inextensible then we characterize this surface in terms of curvatures of spacelike curve in Minkowski 3-space E31.

2011-06-30T00:00:00Z Darus, Maslina Faisal, Imran http://www.saber.ula.ve/handle/123456789/33028 2018-03-15T03:25:06Z 2011-06-30T00:00:00Z

Inclusion properties of certain subclasses of analytic functions Darus, Maslina; Faisal, Imran The purpose of the present paper is to introduce several new classes of analytic functions and investigate various inclusion properties of these classes. Some interesting applications of integral operators are also considered.

2011-06-30T00:00:00Z Masrouri, Naser Yayli, Yusuf http://www.saber.ula.ve/handle/123456789/32580 2018-03-15T03:05:51Z 2011-06-30T00:00:00Z

Special motions for spacelike curve in Minkowski 3-space Masrouri, Naser; Yayli, Yusuf Existence of acceleration pole points in special Frenet and Bishop motions for spacelike curve with a spacelike binormal in Minkowski 3-space E31 are dependence into that, the curve ® is not a general helix or planar. The ratio of torsion and curvature is by taking as a constant or non constant in our study. Then we show that, if the ratio of curvatures is constant, then there is not acceleration pole points of motion.

2011-06-30T00:00:00Z Rotarescu, Eugen http://www.saber.ula.ve/handle/123456789/32579 2018-03-15T03:05:33Z 2011-06-30T00:00:00Z

Mathematical modeling in decision making process under conditions of uncertainty in human resources training and development Rotarescu, Eugen The aim of this paper is the applying, in a particular case of human resources training and development, of some mathematical models of decision making under conditions of uncertainty. The models are also known in other applications, from other fields. In this article, we wanted to show that they can be also applied in human resources training and development, which represents an original contribution in this field. In uncertainty situations, the decisionmaker can not evaluate the apparition probability of the different stages of nature, since he does not have enough information and the variables are partially controllable. In such situations, the decision-maker can resort, for choosing the decisional variants, to different models (rules, techniques and criterions), that are part of the decisional theory, such as: max-min (Abraham Wald’s); max-max (optimist); pessimist optimist (optimal); min-max (the criterion of reducing the regret; Savage’s); equiprobability’s or insufficient reason’s (Laplace’s). Each model has a different vision of the manifestation probability of the future events and they consequences.

2011-06-30T00:00:00Z Körpinar, Talat Asil, Vedat Bas, Selçuk http://www.saber.ula.ve/handle/123456789/32578 2018-03-15T03:04:42Z 2011-06-30T00:00:00Z

On characterization inextensible flows of curves according to Bishop frame in E³. Körpinar, Talat; Asil, Vedat; Bas, Selçuk In this paper, we study inextensible flows of curves in E3: We research inextensible flows of curves according to Bishop frame in E3:

2011-06-30T00:00:00Z Körpinar, Talat Turhan, Essin http://www.saber.ula.ve/handle/123456789/32577 2018-03-15T03:04:24Z 2011-06-30T00:00:00Z

Evolute curves of biharmonic curves in the special three-dimensional Ø-Ricci symmetric Para-Sasakiam manifold P. Körpinar, Talat; Turhan, Essin In this paper, we study evolute curve of biharmonic curve in the special three-dimensional Á¡Ricci symmetric para-Sasakian manifold P. We characterize evolute curve of biharmonic curve in terms of curvature and torsion of biharmonic curve in the special three-dimensional Á¡Ricci symmetric para-Sasakian manifold P: Finally, we find out explicit parametric equations of evolute curve of biharmonic curve.

2011-06-30T00:00:00Z Körpinar, Talat Turhan, Essin http://www.saber.ula.ve/handle/123456789/32576 2018-03-15T03:04:04Z 2011-06-30T00:00:00Z

Biharmonic curves in the special three-dimensional Kentmotsu manifold K with η-parallel Ricci tenso. Körpinar, Talat; Turhan, Essin In this paper, we study biharmonic curves in the special three-dimensional Kenmotsu manifold K with ´-parallel Ricci tensor. We characterize the biharmonic curves in terms of their curvature and torsion.

2011-06-30T00:00:00Z Dutta, Hemen Jebril, Iqbal H. Reddy, Surender Ravikumar, S. http://www.saber.ula.ve/handle/123456789/32561 2018-03-15T03:03:44Z 2011-06-30T00:00:00Z

A Generalization of Modular Sequence Spaces by Cesàro Mean of Order One Dutta, Hemen; Jebril, Iqbal H.; Reddy, Surender; Ravikumar, S. In this paper, we introduce the modular sequence spaces generated by Cesµaro mean of order one and give several properties relevant to algebraic and topological structures of these spaces.

2011-06-30T00:00:00Z Körpinar, Talat Turhan, Essin http://www.saber.ula.ve/handle/123456789/32138 2018-03-15T02:51:45Z 2011-01-11T16:29:32Z

On characterization dual spacelike biharmonic curves with spacelike principal normal according to dual Bishop frames in the dual Lorentzian space D3 1 Körpinar, Talat; Turhan, Essin In this paper, we study dual spacelike biharmonic curves with spacelike principal normal in dual Lorentzian space D3 1: We characterize curvature and torsion of dual spacelike biharmonic curves with spacelike principal normal in terms of dual Bishop frame in dual Lorentzian space D3 1.

2011-01-11T16:29:32Z Bucur, Amelia López Bonilla, José Luis http://www.saber.ula.ve/handle/123456789/32136 2018-03-15T02:51:23Z 2011-01-11T16:26:02Z

On some series of functions Bucur, Amelia; López Bonilla, José Luis The study of the Fourier series convergence is a frequent subject in the speciality literature (see [3], [4]). It is known that the Fourier series convergence is very useful in the technical problems: the electromagnetic field and the loses in the case of an elliptic screen; the calculus of the rectangular plates, the simple leant beam actioned by a movable charge, the dynamic system of the metal bars in which the current crosses, the torsion of a rectangular bar, the quasi-stationary electromagnetic field, the motion of an elastic bar (see[1]). In this paper we will present some results concerning the Fourier series.

2011-01-11T16:26:02Z Amelia Bucur López Bonilla, José Luis http://www.saber.ula.ve/handle/123456789/32132 2018-03-15T02:51:05Z 2011-01-11T16:17:19Z

Geometrical inequalities unconventional demonstrated Amelia Bucur; López Bonilla, José Luis In this paper we have synthetized more geometric inequalities at which we can give unconventional solutions. The applications and some solutions are selected from the bibliography attached to this paper. We consider that the solutions that we can give to the presented inequalities are interesting and can be used also in other cases. The applications are divided into three categories. For the first category will be used Jensen’ s inequality. For second class, will transform the inequalities in optimization problems with restrictions. And to the third category, will be used in the proofs, the vectorial calculation.

2011-01-11T16:17:19Z