Başlık için Makale Koleksiyonu listeleme
Toplam kayıt 306, listelenen: 246-265
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Rate of Convergence for Ibragimov-Gadjiev-Durrmeyer Operators
(De Gruyter Open Ltd, 2017)The present paper deals with the rate of convergence of the general class of Durrmeyer operators, which are generalization of Ibragimov-Gadjiev operators. The special cases of the operators include somewell known operators ... -
Recent developments about multivalued weakly Picard operators
(Belgian Mathematical Soc Triomphe, 2015)In the present paper, considering a recent technique, which is used by Wardowski [24] for fixed points of single-valued mappings, we give a new and general class of multivalued weakly Picard operators on complete metric ... -
Reconstruction of Baskakov operators preserving some exponential functions
(Wiley, 2019)The present paper deals with a new modification of Baskakov operators in which the functions exp(mu t) and exp(2 mu t), mu > 0 are preserved. Approximation properties of the operators are captured, ie, uniform convergence ... -
Recursion Formulas For G(1) And G(2) Horn Hypergeometric Functions
(Univ Miskolc Inst Math, 2015)The aim of this paper is to present various recursion formulas for Horn hypergeometric functions by the contiguous relations of hypergeometric series. These recursion formulas allow us to state the functions G(1) and G(2) ... -
Reinvestigation of bromination of 8-substituted quinolines and synthesis of novel phthalonitriles
(Acg Publications, 2016)Bromination of a series of 8-substituted quinolines was reinvestigated and specified for optimum yields and isolation conditions. Mono bromination of 8-hydroxyquinoline (2a) and 8-aminoquinoline (2c) gave mixture of mono ... -
A Related Fixed Point Theorem for F-Contractions on Two Metric Spaces
(Hacettepe Univ, Fac Sci, 2019)Recently, Wardowski in [Fixed points of a new type of contractive mappings in complete metric spaces, Fixed Point Theory Appl. 2012] introduced the concept of F-contraction on complete metric space which is a proper ... -
Reverse Hardy-type inequalities for supremal operators with measures
(Element, 2015)In this paper we characterize the validity of the inequalities parallel to g parallel to(p,(a, b),lambda) <= c parallel to u(x)parallel to g parallel to(infinity,(x,b),mu) parallel to(q,(a,b),nu) and parallel to g parallel ... -
Rodrigues parameters on dual hyperbolic unit sphere H20
(Taylor & Francis Ltd, 2018)Rodrigues parameters depend on the tangent of the half rotation angle in Euclidean space but in Dual space, dual Rodrigues parameters contain both rotation angle and distance corresponding the shortest distance between the ... -
Rotations and Screw Motion with Timelike Vector in 3-Dimensional Lorentzian Space
(Springer Basel Ag, 2012)In the present paper we obtain the timelike Euler parameters of a Lorentzian orthogonal matrix in Lorentz space L-3 = R-2,R-1 by using Lorentzian matrix multiplication. Then, by using the timelike Euler parameters of a ... -
Ruled surfaces with bi-null curves in R-2(5)
(Springer-Verlag Italia Srl, 2017)In the present paper, we discuss the geometric properties of two classes of ruled surfaces whose directrix curve is a bi-null curve in semi-Euclidean space R-2(5). We get some classes of flat marginally trapped surfaces in R-2(5). -
Semi-Parallel Tensor Product Surfaces In Semi-Euclidean Space E4 2
(2016)In this article, the tensor product surfaces are studied that arisefrom taking the tensor product of a unit circle centered at the origin in Euclidean plane E2and a non-null, unit planar curve in Lorentzian plane E1. Also ... -
Simultaneous Approximation for Generalized Srivastava-Gupta Operators
(Hindawi Ltd, 2015)We introduce a new Stancu type generalization of Srivastava-Gupta operators to approximate integrable functions on the interval (0, infinity) and estimate the rate of convergence for functions having derivatives of bounded ... -
Simultaneous approximation with generalized Durrmeyer operators
(Elsevier Science Inc, 2015)The aim of this paper is to obtain some convergence properties of generalized sequences of Ibragimov-Gadjiev-Durrmeyer operators which are a wide class of linear positive operators including many well known linear positive ... -
Some Approximation Properties Of Kantorovich Variant Of Chlodowsky Operators Based On Q-Integer
(Ankara Univ, Fac Sci, 2016)In this paper, we introduce two different Kantorovich type generalization of the q-Chlodowsky operators. For the first operators we give some weighted approximation theorems and a Voronovskaja type theorem. Also, we present ... -
Some approximation properties of q-Baskakov-Durrmeyer operators
(Elsevier Science Inc, 2011)Very recently Aral and Gupta [1] introduced q analogue of Baskakov-Durrmeyer operators. In the present paper we extend the studies, we establish the recurrence relations for the central moments and obtain an asymptotic ... -
Some Characterizations Of Generalized Null Mannheim Curves In Semi-Euclidean Space
(INST BIOPHYSICS & BIOMEDICAL ENGINEERING, BULGARIAN ACAD SCIENCES, 2020)In the present paper, we investigate Cartan framed generalized null Mannheim curves in the four-dimensional semi-Euclidean space of index two. We construct the Cartan (or Frenet) frames and curvature functions of generalized ... -
Some characterizations of null osculating curves in the Minkowski space-time
(Estonian Academy Publishers, 2012)In this paper we give the necessary and sufficient conditions for null curves in E-1(4), to be osculating curves in terms of their curvature functions. In particular, we obtain some relations between null normal curves and ... -
Some characterizations of rectifying curves in the Euclidean space E4
(2008)In this paper, we define a rectifying curve in the Euclidean 4-space as a curve whose position vector always lies in orthogonal complement N{\perp} of its principal normal vector field N. In particular, we study the ... -
Some common fixed point theorems in vector metric spaces
(Univ Nis, Fac Sci Math, 2011)In this paper we give some theorems on point of coincidence and common fixed points for two self mappings satisfying some general contractive conditions in vector metric spaces. Our results generalize some well-known recent ... -
Some families of multivalently analytic functions with negative coefficients
(Academic Press Inc Jnl-Comp Subscriptions, 1997)The authors introduce and study three novel subclasses of analytic and p-valent functions with negative coefficients. In addition to finding a necessary and sufficient condition for a function to belong to each of these ...
