Browsing FEF  Makale Koleksiyonu  Matematik Bölümü / Department of Mathematics by Title
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The Cauchy problem for a class of twodimensional nonlocal nonlinear wave equations governing antiplane shear motions in elastic materials
(IOP Publishing Ltd, 201104)This paper is concerned with the analysis of the Cauchy problem of a general class of twodimensional nonlinear nonlocal wave equations governing antiplane shear motions in nonlocal elasticity. The nonlocal nature of the ... 
A certain class of harmonic mappings related to functions of bounded boundary rotation
(Eudoxus Press, 201405)Let V(k) be the class of functions with bounded boundary rotation and let SH be the class of sensepreserving harmonic mappings. In the present paper we investigate a certain class of harmonic mappings related to the ... 
A certain class of starlike logharmonic mappings
(Elsevier Science BV, 201411)In this paper we investigate some properties of logharmonic starlike mappings. For this aim we use the subordination principle or Lindelof Principle (Lewandowski (1961) [71). 
Characteristic classes of foliations via SAYDtwisted cocycles
(European Mathematical Society, 2015)We find the first non trivial “SAYDtwisted” cyclic cocycle over the groupoid action algebra under the symmetry of the affine linear transformations of the Euclidian space. We apply the cocycle to construct a characteristic ... 
A characteristic map for compact quantum groups
(Springer Heidelberg, 201709)We show that if G is a compact Lie group and g is its Lie algebra, then there is a map from the Hopfcyclic cohomology of the quantum enveloping algebra Uq(g) to the twisted cyclic cohomology of quantum group algebra ... 
Classification of minimal Lorentzian surfaces in S2(4) (1) with Constant Gaussian and normal curvatures
(Mathematical Society of The Repulic Of China, 201612)In this paper we consider Lorentzian surfaces in the 4dimensional pseudo Riemannian sphere S2(4)(1) with index 2 and curvature one. We obtain the complete classification of minimal Lorentzian surfaces S2(4)(1) whose ... 
Classification of surfaces in a pseudosphere with 2type pseudospherical Gauss map
(WileyV C H Verlag GMBH, 201711)In this article, we study submanifolds in a pseudosphere with 2type pseudospherical Gauss map. We give a characterization theorem for Lorentzian surfaces in the pseudosphere S2(4) subset of E2(5) with zero mean curvature ... 
Closetoconvex functions defined by fractional operator
(2013)Let S denote the class of functions f(z) = z + a2z2+... analytic and univalent in the open unit disc D = {z ∈ Cz<1}. Consider the subclass and S* of S, which are the classes ofconvex and starlike functions, respectively. ... 
Closing the gap in the purely elliptic generalized DaveyStewartson system
(PergamonElsevier Science Ltd, 20081015)In this note we improve the results presented previously on global existence and global nonexistence for the Solutions of the purely elliptic generalized DaveyStewartson system. These results left a gap in the parameter ... 
A complex travelling wave solution to the KdVBurgers equation
(Elsevier Science bv, 20050919)In the present work, making use of the hyperbolic tangent method a complex travelling wave solution to the KdVBurgers equation is obtained. It is observed that the real part of the solution is the combination of a shock ... 
Complex travelling wave solutions to the KdV and Burgers equations
(Elsevier Science Inc, 200503)In the present work, making use of the hyperbolic tangent method, some complex travelling wave solutions to the KortewegdeVries and Burgers equations are obtained. It is observed that the real part of the Solution for the ... 
Constant angle surfaces in the Lorentzian warped product manifold – I × fE²
(Birkhauser, 202106)In this work, we study constant angle spacelike and timelike surfaces in the 3dimensional Lorentzian warped product manifold  I× fE² with the metric g~ =  d t²+ f²(t) (d x²+ d y²) , where I is an open interval, f is ... 
Contribution of higher order terms in electronacoustic solitary waves with vortex electron distribution
(Springer Basel AG, 201412)The basic equations describing the nonlinear electronacoustic waves in a plasma composed of a cold electron fluid, hot electrons obeying a trapped/vortexlike distribution, and stationary ions, in the longwave limit, are ... 
Contribution of higher order terms in nonlinear ionacoustic waves: Strongly dispersive case
(Physical Soc Japan, 200208)Contribution of higher order terms in the perturbation expansion for the strongly dispersive ionplasma waves is examined through the use of modified reductive perturbation method developed by us [J. Phys. Soc. Jpn. 68 ... 
Contribution of higher order terms to the nonlinear shallow water waves
(Işık University Press, 20120512)In this work, by utilizing the scaled multiplespace expansion method, we studied the propagation of weakly nonlinear waves in shallow water and obtained the governing evolution equations of various order terms in the ... 
Contributions of higher order terms to nonlinear waves in fluidfilled elastic tubes: strongly dispersive case
(PergamonElsevier Science, 200307)In the present work, employing the nonlinear equations of an incompressible, isotropic and elastic thin tube and the approximate equations of an incompressible inviscid fluid, and then utilizing the modified reductive ... 
Coupled quintic nonlinear Schrodinger equations in a generalized elastic solid
(IOP Publishing Ltd, 20041008)In the present study, the nonlinear modulation of transverse waves propagating in a cubically nonlinear dispersive elastic medium is studied using a multiscale expansion of wave solutions. It is found that the propagation ... 
Cryptanalysis of Fridrich's chaotic image encryption
(World Scientific Publishing, 201005)We cryptanalyze Fridrich's chaotic image encryption algorithm. We show that the algebraic weaknesses of the algorithm make it vulnerable against chosenciphertext attacks. We propose an attack that reveals the secret ... 
Cylindrical and spherical solitary waves in an electronacoustic plasma with vortex electron distribution
(Amer Inst Physics, 201804)We consider the nonlinear propagation of electronacoustic waves in a plasma composed of a cold electron fluid, hot electrons obeying a trapped/vortexlike distribution, and stationary ions. The basic nonlinear equations ... 
Dendrimers are the unique chemical trees with maximum spectral radius
(Univ Kragujevac, 2012)It is shown that dendrimers have maximum spectral radius and maximum CollatzSinogowitz index among all chemical trees of given size. The result is also generalized for the class of chemical trees with prescribed number ...