Güncel Gönderiler: Matematik Bölümü
Toplam kayıt 548, listelenen: 321-340
-
On N(k)-quasi Einstein manifolds satisfying certain conditions
(Balkan Soc Geometers, 2008)This paper deals with N(k)-quasi Einstein manifolds satisfying the conditions R(xi ,X)center dot C = 0 and R(xi,X)center dot(C) over tilde = 0, where C and (C) over tilde denote the Weyl conformal curvature tensor and the ... -
A decomposition of some types of mixed soft continuity in soft topological spaces
(Univ Nis, 2016)In this paper, we study the concept of soft sets which is introduced by Molodtsov [5] and the notion of soft continuity is introduced by Zorlutuna et al. [8]. We give the definition of (tau(1), tau(2)) -semi open soft ... -
A presentation and some finiteness conditions for a new version of the Schiitzenberger product of monoids
(Scientific Technical Research Council Turkey-Tubitak, 2016)In this paper we first define a new version of the Schutzenberger product for any two monoids A and B, and then, by defining a generating and relator set, we present some finite and infinite consequences of the main result. ... -
Riemannian manifolds with a semi-symmetric metric connection satisfying some semisymmetry conditions
(Estonian Academy Publishers, 2008)We study Riemannian manifolds M admitting a semi-symmetric metric connection ($) over tilde such that the vector field U is a parallel unit vector field with respect to the Levi-Civita connection del. We prove that ($) ... -
Separability and efficiency under standard wreath product in terms of Cayley graphs
(Rocky Mt Math Consortium, 2008)In this paper we are mainly interested in separability and efficiency under the standard wreath product. To do that we will first obtain a presentation, say P(G), for the standard wreath product in terms of Cayley graphs. ... -
Trace classes and fixed points for the extended modular group (Gamma)over-bar
(Scientific Technical Research Council Turkey-Tubitak, 2008)The extended modular group (Gamma) over bar = PGL(2, Z) is the group obtained by adding the reflection R(z) = 1/(z) over bar to the generators of the modular group F = PSL(2, Z). In this paper, we find the trace classes ... -
Approximation in weighted generalized grand lebesgue spaces
(Ars Polona-Ruch, 2016)The direct and inverse problems of approximation theory in the subspace of weighted generalized grand Lebesgue spaces of 2 pi-periodic functions with the weights satisfying Muckenhoupt's condition are investigated. Appropriate ... -
Generalized pell sequences in some principal congruence subgroups of the hecke groups
(Editura Acad Romane, 2016)In this paper, we consider the Hecke groups H(root m) for m = 1, 2 and 3. Firstly, we give the generators of the principal congruence subgroups H-2(root m) of H(root m), respectively. Then, using some of these generators, ... -
On contact metric hypersurfaces in a real space form
(Academic Publication Council, 2007)For a (2n + 1)-dimensional N(k)-contact metric hypersurface in a real space form (M) over tilde (c), some main results are obtained as follows: (1) if k - c > 0 then M is totally umbilical, and consequently, either M is a ... -
Improved inverse theorems in weighted lebesgue and smirnov spaces
(Belgian Mathematical Soc Triomphe, 2007)The improvement of the inverse estimation of approximation theory by trigonometric polynomials in the weighted Lebesgue spaces was obtained and its application in the weighted Smirnov spaces was considered. -
Approximation properties of Julia polynomials
(Springer Heidelberg, 2007)Let G be a finite simply connected domain in the complex plane C, bounded by a rectifiable Jordan curve L, and let w = phi(0) (z) be the Riemann conformal mapping of G onto D(0, r (0)) := {w : vertical bar w vertical bar ... -
On some classes of biharmonic legendre curves in generalized sasakian space forms
(Springer-Verlag Italia Srl, 2014)We find the characterizations of the curvatures of biharmonic Legendre curves in generalized Sasakian space forms with constant functions. -
The normal subgroup structure of the extended Hecke groups
(Springer Heidelberg, 2007)We consider the extended Hecke groups (H) over bar(lambda) generated by T (z) = -1/z, S(z) = -1/(z + lambda) and R(z) = 1/(z) over bar with lambda >= 2. In this paper, firstly, we study the fundamental region of the extended ... -
The p-Cockcroft property of central extensions of groups II
(Springer Wien, 2007)In [6], Cevik defined necessary and sufficient conditions for the presentation of a central extension of a cyclic group by an ordinary group to be p-Cockcroft, where p is a prime or 0. In this paper, as a next step of this ... -
(Cyclic) subgroup separability of HNN and split extensions
(Versita, 2007)This work has been divided in two parts. In the first part we give a sufficient conditions on an HNN extension of a free group to be cyclic subgroup seperable. In the second part we define just subgroup separability on a ... -
On the contact conformal curvature tensor of a contact metric manifold
(Indian Nat Sci Acad, 2006)The contact conformal curvature tensor of an N(kappa)-contact rhetric manifolds is studied. We prove that an N(kappa)-contact metric manifold with vanishing extended contact conformal curvature tensor is a Sasakian manifold. ... -
On 2-quasi-umbilical pseudosymmetric hypersurfaces in the Euclidean space
(Springer, 2007)In this paper, we investigate 2-quasi-umbilical pseudosymmetric hypersurfaces in the Euclidean space En+1. We find the curvature characterization of pseudosymmetric hypersurfaces in the Euclidean space En+1. -
Minimal but inefficient presentations for self semidirect products of the free abelian monoid on two generators
(Taylor & Francis Inc, 2007)Let A and K both be copies of the free Abelian monoid on two generators. For any connecting monoid homomorphism theta:A -> End (K), let M = K x(theta) A be the corresponding monoid semidirect product. In Cevik ( 2005), it ... -
On some geometric properties of finite blaschke products
(Int Electronic Journal Geometry, 2015)In this paper we consider some geometric properties of finite Blaschke products for the unit disc and for the upper half plane. -
Contra g-alpha- and g-beta-preirresolute functions on GTS's
(Springer Heidelberg, 2015)In this present paper, we define g-alpha-preirresolute, g-beta-preirresolute, contra g-alpha-preirresolute and contra g-beta-preirresolute functions on generalized topological spaces. We give some examples of this definitions. ...
