i-manager's Journal on Mathematics (JMAT)


Volume 2 Issue 4 October - December 2013

Research Paper

Remarks On Four-Dimensional PseudosymmetricKahlerian Manifolds

Beldjilali Gherici* , Mohamed Belkhelfa**, Hasni Abdelbasset***
*-**-*** Laboratoire de Physique Quantique de la matière et de Modélisation Math_ematique, (LPQ3M), Université de Mascara, Mascara, Algeria.
Gherici, B., Mohamed, B., and Abdelbasset, H. (2013). Remarks on Four-Dimensional Pseudosymmetric Kahlerian Manifolds. i-manager’s Journal on Mathematics, 2(4), 1-6. https://doi.org/10.26634/jmat.2.4.2609

Abstract

In the present paper, we prove that for a 4-dimensional properly pseudosymmetric Kählerian manifold M, the Ricci tensor vanishes on the set p Î {M/ f(p) 6≠ 0} where f is the structure fonction (i.e R(X,Y ) = f(XÙY).R) and for f > 0 the manifold is not compact. Various examples are discussed.

Research Paper

Synchronization and Anti-Synchronization Of A Chaotic Satellite Under The Effect Of Magnetic Torque Via Active Control

Mohammad * , Mohammed Raziuddin**
* Department of General Requirements, College of Applied Sciences, Nizwa, Oman.
** Department of Information Technology, Nizwa College of Technology, Nizwa, Oman.
Mohammad Shahzad and Mohammad Raziuddin (2013). Synchronization and Anti-Synchronization of A Chaotic Satellite Under The Effect of Magnetic Torque via Active Control. i-manager’s Journal on Mathematics, 2(4), 7-13. https://doi.org/10.26634/jmat.2.4.2610

Abstract

The determination and prediction of the orbit of a satellite is influenced by the perturbing forces causing chaos. In this paper, we have discussed the synchronization and anti-synchronization (AS) behavior of two such identical planar oscillation of a satellite in elliptic orbit influenced by magnetic torque evolving from different initial conditions using the active control technique. The designed controllers, with our own choice of the coefficient matrix of the error dynamics are found to be effective to achieve synchronization and AS between the states variables of two chaotic identical dynamical systems under consideration. All the results are validated by numerical simulations using mathematica.

Research Paper

ICE Math: Geometric Software Illustrating Concentric Circles In Figure Skating

Diana Cheng* , Tetyana Berezovski**
* Assistant Professor, Towson University, Maryland, USA.
** Associate Professor, St. Joseph's University, Pennsylvania, USA.
Cheng, D., and Berezovski, T. (2013). ICE Math: Geometric Software Illustrating Concentric Circles In Figure Skating. i-manager’s Journal on Mathematics, 2(4), 14-20. https://doi.org/10.26634/jmat.2.4.2611

Abstract

In light of the upcoming Winter Olympic Games, a mathematical modeling problem involving algebra and geometry is presented via dynamic geometry software in the context of pairsfigure skating. The death spiral involves a lady's and man's forming concentric circles with their blades on the ice. In-service elementary, middle and high school teachers used knowledge of rates and circumference to solve problems involving the death spiral. Teachers' work is analyzed and discussed.

Research Paper

Proximalpositive Parallel Notation: A Novel Method Of Expressing Mathematical Complements, Collaborations, and Combinations

James Edward Osler II*
North Carolina Central University
Osler, J. E., II. (2013). Proximal Positive Parallel Notation: A Novel Method of Expressing Mathematical Complements, Collaborations, And Combinations. i-manager’s Journal on Mathematics, 2(4), 21-32. https://doi.org/10.26634/jmat.2.4.2612

Abstract

This monograph provides anepistemological rational for the mathematical “Proximal Positive Parallel Notation” as a novel mathematical operation. This innovative mathematical notation is used to define the relationship between values that construct the Standard Tri–Squared Test 3 × 3 Table used in the transformative process of qualitative data into quantitative outcomes. The Tri–Squared Test was introduced in an earlier Journal on Mathematics article by the author. The mathematical notion of “Unlimitation” is also introduced as an explicative part of the definition of the Proximal Positive Parallel formulae. Integrated into this new parallel notation is the neoteric “Coextensive” sign as a symbol of the relationship between terms. The Proximal Positive Parallel as a unique and inventive mathematical notation that may be applied to other areas and arenas of mathematics, statistics, and other sciences. Its broader application in diverse academic fields (such as the social sciences) will aid in building and strengthening the connections between mathematics and other academic disciplines.

Research Paper

On Some Properties Of Closability Of FarthestPoint Maps In Fuzzy n-Normed Spaces

Muhammed Recai Turkmen * , Hakan EFE**
* Department of Mathematics, Faculty of Science and Arts, Mus Alparslan University, Guzeltepe, Mus, Turkey.
** Department of Mathematics, Faculty of Science, Gazi University, Teknikokullar, Ankara, Turkey.
Turkmen, M.R., and Efe, H. (2013). On Some Properties of Closability Of Farthest Point Maps in Fuzzy N-Normed Spaces. i-manager’s Journal on Mathematics, 2(4), 33-38. https://doi.org/10.26634/jmat.2.4.2613

Abstract

In this paper, we study farthest point map in fuzzy n - normed spaces. Firstly, we give some definitions about fuzzy n - normed space and we present some examples by using this definitions. Secondly, we study farthest point map in fuzzy n - normed spaces and we redefine some some definitions by using previous definitions. Moreover, we abtain fuzzy uniquelly remotal associated singleton. Additionally, we give some relations about - convergent sequences in fuzzy n - normed spaces. Finally, we show that fuzzy - farthest point map is closable and characterize some properties of the closability of farthest point map in fuzzy n - normed spaces and prove some theorems. 2010 Mathematics Subject Classification: 46A30, 46A70, 54A40.