Matematik Bölümü: Recent submissions
Now showing items 301-320 of 552
-
Improved direct and converse theorems in weighted Lorentz spaces
(Belgian Mathematical Soc Triomphe, 2016)In the present work we prove the equivalence of the fractional modulus of smoothness to the realization functional and to the Peetre K-functional in weighted Lorentz spaces. Using this equivalence we obtain an improvement ... -
Chen inequalities for submanifolds of real space forms with a semi-symmetric non-metric connection
(Canadian Mathematical Soc, 2012)In this paper we prove Chen inequalities for submanifolds of real space forms endowed with a semi-symmetric non-metric connection, i.e., relations between the mean curvature associated with a semi-symmetric non-metric ... -
Multiplier theorems in weighted smirnov spaces
(Korean Mathematical Soc, 2008)The analogues of Marcinkiewicz multiplier theorem and Littlewood-Paley theorem are proved for p-Faber series in weighted Smirnov spaces defined on bounded and unbounded components of a rectifiable Jordan curve. -
On parametric s-metric spaces and fixed-point type theorems for expansive mappings
(Hindawi Ltd, 2016)We introduce the notion of a parametric S-metric space as generalization of a parametric metric space. Using some expansive mappings, we prove a fixed-point theorem on a parametric S-metric space. It is important to obtain ... -
Approximation by polynomials and rational functions in weighted rearrangement invariant spaces
(Academic Press Inc Elsevier Science, 2008)Let Gamma be a Dini-smooth curve in the complex plane, and let G := lnt Gamma. We prove some direct and inverse theorems of approximation theory by algebraic polynomials and rational functions in the weighted rearrangement ... -
Fractional diffusion-wave problem in cylindrical coordinates
(Elsevier Science Bv, 2008)in this Letter, we present analytical and numerical solutions for an axis-symmetric diffusion-wave equation. For problem formulation. the fractional time derivative is described in the sense of Riemann-Liouville. The ... -
Generalized sasakian space forms with semi-symmetric metric connections
(Unıv Al I Cuza, Fac Math, 2014)The aim of the present paper is to introduce generalized Sasakian space forms endowed with semi-symmetric metric connections. We obtain the existence theorem of a generalized Sasakian space form with semi-symmetric metric ... -
On Biharmonic Legendre curves in S-space forms
(Scientific Technical Research Council Turkey-Tubitak, 2014)We study biharmonic Legendre curves in S-space forms. We find curvature characterizations of these special curves in 4 cases. -
On submanifolds satisfying chen's equality in a real space form
(Springer Heidelberg, 2008)Einstein, conformally flat, semisymmetric, and Ricci-semisymmetric submanifolds satisfying Chen's equality in a real space form are studied. We prove that an n-dimensional (n >= 3) submanifold of a real space form (M) over ... -
Optimal boundary control of thermal stresses in a plate based on time-fractional heat conduction equation
(Taylor & Francis Inc, 2014)This article presents an optimal control problem for a fractional heat conduction equation that describes a temperature field. The main purpose of the research was to find the boundary temperature that takes the thermal ... -
On semiparallel anti-invariant submanifolds of generalized Sasakian space forms
(Scientific Technical Research Council Turkey-Tubitak, 2014)We consider minimal anti-invariant semiparallel submanifolds of generalized Sasakian space forms. We show that the submanifolds are totally geodesic under certain conditions. -
Approximation and moduli of fractional orders in smirnov-orlicz classes
(Croatian Mathematical Soc, 2008)In this work we investigate the approximation problems in the Smirnov-Orlicz spaces in terms of the fractional modulus of smoothness. We prove the direct and inverse theorems in these spaces and obtain a constructive ... -
Finite derivation type for graph products of monoids
(Univ Nis, 2016)The aim of this paper is to show that the class of monoids of finite derivation type is closed under graph products. -
On slant curves in trans-sasakian manifolds
(Union Matematica Argentina, 2014)We find the characterizations of the curvatures of slant curves in trans-Sasakian manifolds with C-parallel and C-proper mean curvature vector field in the tangent and normal bundles. -
Coordinate finite type rotational surfaces in euclidean spaces
(Univ Nis, 2014)Submanifolds of coordinate finite-type were introduced in [10]. A submanifold of a Euclidean space is called a coordinate finite-type submanifold if its coordinate functions are eigenfunctions of Delta. In the present study ... -
Optimal control of a linear time-invariant space-time fractional diffusion process
(Sage Publications Ltd, 2014)This paper presents a formulation and numerical solutions of an optimal control problem of a linear time-invariant space-time fractional diffusion equation. The main aim of this formulation is minimization of a performance ... -
Two-sided crossed products of groups
(Univ Nis, 2016)In this paper, we first define a new version of the crossed product of groups under the name of two-sided crossed product. Then we present a generating and relator sets for this new product over cyclic groups. In a separate ... -
Simultaneous approximation of functions in Orlicz spaces with Muckenhoupt weights
(Taylor & Francis Ltd, 2016)It is proved that theorems on simultaneous trigonometric approximation of functions given in the weighted Orlicz spaces L-phi,L-omega**, with a generating Young function phi that might be non-convex, are held. We mainly ... -
A note on the grobner-shirshov bases over ad-hoc extensions of groups
(Univ Nis, 2016)The main goal of this paper is to obtain (non-commutative) Grobner-Shirshov bases for monoid presentations of the knit product of cyclic groups and the iterated semidirect product of free groups. Each of the results here ... -
Trigonometric approximation in weighted orlicz spaces
(Inst Mathematics & Mechanics, 2016)In the present article, we prove some trigonometric approximation theorems in weighted Orlicz spaces, having generating Young functions not necessary to be convex.
