Güncel Gönderiler: Matematik-Makale Koleksiyonu
Toplam kayıt 499, listelenen: 301-320
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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. ... -
Power subgroups of some Hecke groups II
(Univ Houston, 2007)Let q >= 3 be an odd integer and let H(lambda(q)) be the Hecke group associated to q. Let m be a positive integer and H-m(lambda(q)) be the m-th power subgroup of H(lambda(q)). In this work, the power subgroups H-m(lambda(q)) ... -
Principal congruence subgroups of hecke groups H(root q)
(Springer Heidelberg, 2006)Using the notion of quadratic reciprocity, we discuss the principal congruence subgroups of the Hecke groups H(root q), q > 5 prime number. -
On the extended Hecke group (H)over-bar (lambda(5))
(World Scientific Publ Co Pte Ltd, 2006)We consider the extended Hecke group (H) over bar(gimel(5)) generated by T(z) = -1/z, S(z) = -1/(z + gimel(5)) and R(z) = 1/(z) over bar with gimel(5) = 2cos(pi/5) = (1 + root 5)/2. In this paper, we study the abstract ... -
Approximation by interpolating polynomials in Smirnov-Orlicz class
(Korean Mathematical Soc, 2006)Let F be a bounded rotation (BR) curve without cusps in the complex plane C and let G : = int Gamma. We prove that the rate of convergence of the interpolating polynomials based on the zeros of the Faber polynomials F-n ... -
On P-Sasakian manifolds satisfying certain conditions on the concircular curvature tensor
(Scientific Technical Research Council Turkey-Tubitak, 2007)We classify P-Sasakian manifolds, which satisfy the conditions Z(xi,X). Z = 0, Z(xi, X) . R = 0, R(xi, X) . Z = 0, Z(xi, X) . S = 0 and Z(xi, X) . C = 0. -
Approximation properties of the Bieberbach polynomials in closed Dini-smooth domains
(Belgian Mathematical Soc Triomphe, 2006)Let G be a finite Dini-smooth domain and w = phi(0)(z) be the confornial mapping of G onto D (0, r(0)) := {w :vertical bar w vertical bar < r(0)) with the normalization phi(0)(z(0)) = 0, phi'(0)(z(0)) = 1, where z(0) is ... -
On the mean summability by Cesaro method of Fourier trigonometric series in two-weighted setting
(Springeropen, 2006)The Cesaro summability of trigonometric Fourier series is investigated in the weighted Lebesgue spaces in a two-weight case, for one and two dimensions. These results are applied to the prove of two-weighted Bernstein's ... -
Approximation in weighted Smirnov-Orlicz classes
(Duke Univ Press,, 2006)In this work some direct and inverse theorems of approximation theory in the weighted Smirnov-Orlicz classes, defined in the domains with a Dini-smooth boundary, are proved. In particular, a constructive characterization ... -
Power subgroups of some Hecke groups
(Rocky Mt Math Consortium, 2006)Let q > 3 be an even integer and let H(lambda(q)) be the Hecke group associated to q. Let m be a positive integer and H-m(lambda(q)) the power subgroup of H(lambda(q)). In this work the power subgroups H-m(lambda(q)) are ... -
Some normal subgroups of the extended Hecke groups H(lambda(p))
(Rocky Mt Math Consortium, 2006)We consider the extended Hecke groups (H) over bar (lambda p) generated by T(z) = -1/z, S(z) = -1/(z+lambda p) and R(z) = 1/(z) over bar with lambda P = 2 cos(pi/p) for p >= 3 prime number. In this article, we study the ... -
Approximation by trigonometric polynomials in weighted Orlicz spaces
(Polish Acad Sciences Inst Physics, 2006)We investigate the approximation properties of the partial sums of the Fourier series and prove some direct and inverse theorems for approximation by polynomials in weighted Orlicz spaces. In particular we obtain a ...
