Güncel Gönderiler: Matematik Bölümü
Toplam kayıt 330, listelenen: 121-140
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A Fixed Point Theorem for JS-contraction Type Mappings with Applications to Polynomial Approximations
(Univ Nis, Fac Sci Math, 2017)A fixed point theorem is established for a new class of JS-contraction type mappings. As applications, some Kelisky-Rivlin type results are obtained for linear and nonlinear q-Bernstein-Stancu operators. -
On Szasz-Mirakyan Operators Preserving e(2ax), a > 0
(Springer Basel Ag, 2017)A modification of Szasz-Mirakyan operators is presented that reproduces the functions 1 and e(2ax), a > 0 fixed. We prove uniform convergence, order of approximation via a certain weighted modulus of continuity, and a ... -
The derivative and tangent operators of a motion in Lorentzian space
(World Scientific Publ Co Pte Ltd, 2017)In this paper, by using Lorentzian matrix multiplication, L-Tangent operator is obtained in Lorentzian space. The L-Tangent operators related with planar, spherical and spatial motion are computed via special matrix groups. ... -
Approximation Properties of Ibragimov-Gadjiev-Durrmeyer Operators on L-P (R+)
(De Gruyter Poland Sp Zoo, 2017)We deal with the approximation properties of a new class of positive linear Durrmeyer type operators which offer a reconstruction of integral type operators including well known Durrmeyer operators. This reconstruction ... -
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 ... -
Osculating curves in 4-dimensional semi-Euclidean space with index 2
(De Gruyter Open Ltd, 2017)In this paper, we give the necessary and sufficient conditions for non-null curves with non-null normals in 4-dimensional Semi-Euclidian space with indeks 2 to be osculating curves. Also we give some examples of non-null ... -
(p, q)-Variant of Szasz-Beta operators
(Springer-Verlag Italia Srl, 2017)In the present paper, we introduce certain (p, q) analogue of the Szasz-Beta operators using (p, q)-variant of Beta function of second kind. We present direct theorem in weighted spaces in terms of suitable weighted modulus ... -
Weighted Iterated Hardy-Type Inequalities
(Element, 2017)In this paper reduction and equivalence theorems for the boundedness of the composition of a quasilinear operator T with the Hardy and Copson operators in weighted Lebesgue spaces are proved. New equivalence theorems are ... -
On two classes of approximation processes of integral type
(Springer, 2017)The paper aims to study two classes of linear positive operators representing modifications of Picard and Gauss operators. The new operators reproduce both constants and a given exponential function. Approximation properties ... -
Lorentzian stationary surfaces and bi-null curves in R-2(5)
(World Scientific Publ Co Pte Ltd, 2017)In this paper, we study Lorentzian stationary surfaces related to bi-null curves in R-2(5). Considering a Gauss-like map, we get Lorentzian stationary surfaces and marginally trapped surfaces in the pseudo-sphere S-2(4) (1). -
Iterated Hardy-type inequalities involving suprema
(Element, 2017)In this paper, the boundedness of the composition of the supremal operators defined, for a non-negative measurable functions f on (0,infinity), by S(u)g(t) := ess sup(0<tau <= t) u(tau)g(tau), t is an element of(0,infinity), ... -
Frenet Curves in Euclidean 4-Space
(Int Electronic Journal Geometry, 2017)In this paper, we study rectifying curves arising through the dilation of unit speed curves on the unit sphere S-3 and conclude that arcs of great circles on S-3 do not dilate to rectifying curves, which develope previously ... -
Generalized Baskakov type operators
(Walter De Gruyter Gmbh, 2017)In this paper, we introduce a generalization of Baskakov operators based on a function rho. We prove a weighted Korovkin type theorem and compute the rate of convergence via weighted modulus of continuity for these operators. ... -
Szasz-Mirakyan Type Operators Which Fix Exponentials
(Springer Basel Ag, 2017)In this paper, we construct a new general class of operators which have the classical Szasz Mirakyan ones as a basis, and fix the functions and with . The convergence of the corresponding sequences is discussed in exponential ... -
Bezier variant of the Bernstein-Durrmeyer type operators
(Springer Basel Ag, 2017)In the present paper, we introduce the Bezier-variant of Durrmeyer modification of the Bernstein operators based on a function , which is infinite times continuously differentiable and strictly increasing function on [0, ... -
Nonlinear proximinal multivalued contractions on quasi-metric spaces
(Springer Basel Ag, 2017)In this paper, taking into account the concept of proximinal set, we obtain some new fixed point results for nonlinear proximinal multivalued contractions on some kind of complete quasi-metric spaces. Also, we present some ... -
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). -
k-Type bi-null slant helices in R-2(5)
(Springer Basel Ag, 2017)In the present paper, we give the notion of k-type bi-null slant helices in R-2(5), where k is an element of {0, 1, 2, 3, 4}. We give the necessary and sufficient conditions for bi-null curves to be k-type slant helices ... -
Construction of a new family of Bernstein-Kantorovich operators
(Wiley, 2017)In the present paper, we construct a new sequence of Bernstein-Kantorovich operators depending on a parameter alpha. The uniform convergence of the operators and rate of convergence in local and global sense in terms of ... -
Embeddings Between Weighted Copson And Cesaro Function Spaces
(Springer Heidelberg, 2017)In this paper, characterizations of the embeddings between weighted Copson function spaces Cop(p1,q1)(u(1),v(1)) and weighted Cesaro function spaces Ces(p2,q2) (u(2) , v(2)) are given. In particular, two-sided estimates ...