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Browsing Matematik by Issue Date

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  • On Some Characterizations of Ruled Surface of a Closed Timelike Curve in Dual Lorentzian Space 
    Bektas, Ozcan; Senyurt, Suleyman (SPRINGER BASEL AG-BASEL, 2012)
    In this paper, we investigate the relations between the pitch, the angle of pitch and drall of parallel ruled surface of a closed curve in dual Lorentzian space.
  • THE NATURAL LIFT CURVES AND GEODESIC CURVATURES OF THE SPHERICAL INDICATRICES OF THE TIMELIKE BERTRAND CURVE COUPLE 
    Senyurt, Suleyman; Caliskan, Omer Faruk (INT ELECTRONIC JOURNAL GEOMETRYINT ELECTRONIC JOURNAL GEOMETRY, ANKARA 00000, TURKEY, 2013)
    In this paper, when (alpha, alpha*) timelike Bertrand curve couple is given, the geodesic curves and the arc-lenghts of the curvatures (T*), (N*), (B*) and the fixed pole curve (C*) which are generated over the S(1)(2)Lorentz ...
  • Laplace Transform of the Distribution of the Semi-Markov Walk Process with a Positive Drift, Negative Jumps, and a Delay Screen at Zero 
    Yapar, J.; Maden, S.; Karimova, U. (PLEIADES PUBLISHING INCPLEIADES HOUSE, 7 W 54 ST, NEW YORK, NY 10019, UNITED STATES, 2013)
    In this paper, we investigate the process of semi-Markov random walk with a positive drift, negative jumps, and a delay screen at zero. Explicit forms are found of the Laplace transform in time, the Laplace-Stieltjes ...
  • On some inequalities for s-convex functions and applications 
    Ozdemir, Muhamet Emin; Yildiz, Cetin; Akdemir, Ahmet Ocak; Set, Erhan (SPRINGERONE NEW YORK PLAZA, SUITE 4600 , NEW YORK, NY 10004, UNITED STATES, 2013)
    Some new results related to the left-hand side of the Hermite-Hadamard type inequalities for the class of functions whose second derivatives at certain powers are s-convex functions in the second sense are obtained. Also, ...
  • Some Characteristic Properties of Parallel z-Equidistant Ruled Surfaces 
    As, Engin; Senyurt, Suleyman (HINDAWI LTDADAM HOUSE, 3RD FLR, 1 FITZROY SQ, LONDON W1T 5HF, ENGLAND, 2013)
    Some characteristic properties of two ruled surfaces whose principal normal vectors are parallel along their striction curves in are examined by assuming that the distance between two central planes at suitable points is ...
  • SOME NEW INEQUALITIES OF HERMITE-HADAMARD TYPE FOR h-CONVEX FUNCTIONS ON THE CO-ORDINATES VIA FRACTIONAL INTEGRALS 
    Ogulmus, Hatice; Sarikaya, M. Zeki; Set, Erhan (UNIV NISUNIVERZITETSKI TRG 2, PO BOX 123, NIS 18000, SERBIA, 2014)
    By making use of the identity obtained by Sarikaya, some new Hermite-Hadamard type inequalities for h-convex functions on the co-ordinates via fractional integrals are established. Our results have some relationships with ...
  • The Hermite-Hadamard's inequality for some convex functions via fractional integrals and related results 
    Ozdemir, M. E.; Sarikaya, M. Z.; Set, E.; Yildirim, H. (SCIENDOBOGUMILA ZUGA 32A, WARSAW, MAZOVIA 01-811, POLAND, 2014)
    In this paper, we establish Hermite-Hadamard type inequalities for s - convex functions in the second sense and m - convex functions via fractional integrals. The analysis used in the proofs is fairly elementary.
  • On new general integral inequalities for s-convex functions 
    Iscan, Imdat; Ozdemir, M. Emin; Set, Erhan (ELSEVIER SCIENCE INCSTE 800, 230 PARK AVE, NEW YORK, NY 10169, 2014)
    In this paper, the authors establish some new estimates for the remainder term of the midpoint, trapezoid, and Simpson formula using functions whose derivatives in absolute value at certain power are s-convex. Some ...
  • Hadamard type inequalities for phi-convex functions on the co-ordinates 
    Akdemir, Ahmet Ocak; Sarikaya, Mehmet Zeki; Set, Erhan (TBILISI CENTRE MATH SCIA RAZMADZE MATHEMATICAL INST 1, M ALEKSIDZE ST, TBILISI 0193, REP OF GEORGIA, 2014)
    In this paper, we introduce the notation of phi-convex functions on the co-ordinates and present some properties. Also, new Hadamard type inequalities for such functions are obtained.
  • SOME OSTROWSKI ' S TYPE INEQUALITIES FOR FUNCTIONS WHOSE SECOND DERIVATIVES ARE s-CONVEX IN THE SECOND SENSE 
    Ozdemir, M. Emin; Sarikaya, Mehmet Zeki; Set, Erhan (DE GRUYTER POLAND SP Z O OBOGUMILA ZUGA 32A STR, 01-811 WARSAW, MAZOVIA, POLAND, 2014)
    Some new inequalities of the Ostrowski type for twice differentiable mappings whose derivatives in absolute value are s-convex in the second sense are given.
  • On a Cotangent Bundle with Deformed Riemannian Extension 
    Aslanci, Seher; Cakan, Rabia (SPRINGER BASEL AGPICASSOPLATZ 4, BASEL 4052, SWITZERLAND, 2014)
    The main purpose of this paper is to study deformed Riemannian extensions in the cotangent bundle. The curvature properties of metric connections for deformed Riemannian extensions are also investigated.
  • On some integral inequalities for twice differentiable mappings 
    Ozdemir, M. Emin; Sarkaya, Mehmet Zeki; Set, Erhan (UNIV BABES-BOLYAIMIHAIL KOGALNICEANU NR. 1, CLUJ-NAPOCA RO-3400, ROMANIA, 2014)
    In this paper, we establish several new inequalities for some twice differantiable mappings. Then, we apply these inequalities to obtain new midpoint, trapezoid and perturbed trapezoid rules. Finally, some applications for ...
  • On New Ostrowski Type Integral Inequalities 
    Sarikaya, Mehmet Zeki; Set, Erhan (CHIANG MAI UNIV, FAC SCIENCE239 HUAY KAEW RD, T SUTHEP, CHIANG MAI 50200, THAILAND, 2014)
    In this article, we give a new Montgomery type identity and using this identity establish a new Ostrowski type inequality and its perturbed inequality forms.
  • On a New Ostrowski-Type Inequality and Related Results 
    Sarikaya, Mehmet Zeki; Set, Erhan (KYUNGPOOK NATL UNIV, DEPT MATHEMATICS80 DAEHAKRO, BUKGU, TAEGU 41566, SOUTH KOREA, 2014)
    We provide a new Ostrowski-type inequality involving functions of two independent variables, as well as some related results.
  • On Some Hadamard-Type Inequalities for (r, m)-Convex Functions 
    Ozdemir, M. Emin; Set, Erhan; Akdemir, Ahmet Ocak (PRAIRIE VIEW A & M UNIV, DEPT MATHEMATICS-PRAIRIE VIEW, 2014)
    In this paper, we define a new class of convex functions which is called (r, m)-convex functions. We also prove some Hadamard's type inequalities based on this new definition.
  • Hadamard type inequalities for φ-convex functions on the co-ordinates 
    Set, Erhan; Sarikaya, Mehmet Zeki; Akdemir, Ahmet Ocak (DE GRUYTER OPEN LTD-WARSAW, 2014)
    In this paper, we introduce the notation of phi-convex functions on the co-ordinates and present some properties. Also, new Hadamard type inequalities for such functions are obtained.
  • An Alternative Robust Model for in situ Degradation Studies Korkmaz-Uckardes 
    Korkmaz, M.; Uckardes, F. (ISLAMIC AZAD UNIV, RASHT-RASHT, 2014)
    The first purpose of this study is to present an alternative robust model in order to describe ruminal degradation kinetics of forages and to minimize the fitting problems. For this purpose, the Korkmaz-Uckardes (KU) model, ...
  • On new inequalities of Hermite-Hadamard-Fejer type for convex functions via fractional integrals 
    Iscan, Imdat; Sarikaya, M. Zeki; Sarikaya, M. Zeki; Set, Erhan (ELSEVIER SCIENCE INCSTE 800, 230 PARK AVE, NEW YORK, NY 10169, 2015)
    In this paper, we establish some weighted fractional inequalities for differentiable mappings whose derivatives in absolute value are convex. These results are connected with the celebrated Hermite-Hadamard-Fejer type ...
  • Some new Chebyshev type inequalities for functions whose derivatives belongs to L-p spaces 
    Akdemir, Ahmet Ocak; Ozdemir, M. Emin; Sarikaya, M. Zeki; Set, Erhan (SPRINGER HEIDELBERGTIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY, 2015)
    Several researchers have studied on widely known Chebyshev type inequalities that have an important place in the field of mathematical analysis. In this paper, we obtain some new Chebyshev type inequalities for functions ...
  • On generalized Gruss type inequalities for k-fractional integrals 
    Sarikaya, Mehmet Zeki; Set, Erhan; Tomar, Muharrem (ELSEVIER SCIENCE INCSTE 800, 230 PARK AVE, NEW YORK, NY 10169, 2015)
    The aim of the present paper is to investigate some new integral inequalities of Gruss type for k - Riemann-Liouville fractional integrals. From our results, new weighted or classical Griiss type inequalities have been ...

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