نتایج جستجو برای: Liuville differential operator

تعداد نتایج: 371992  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اراک - دانشکده علوم پایه 1389

abstract in this thesis at first we comput the determinant of hankel matrix with enteries a_k (x)=?_(m=0)^k??((2k+2-m)¦(k-m)) x^m ? by using a new operator, ? and by writing and solving differential equation of order two at points x=2 and x=-2 . also we show that this determinant under k-binomial transformation is invariant.

Journal: :international journal of nonlinear analysis and applications 2013
m. alimohammady m. k. kalleji

in this paper we study properties of symbols such that these belong to class of symbols sitting insidesm ρ,φ that we shall introduce as the following. so for because hypoelliptic pseudodifferential operatorsplays a key role in quantum mechanics we will investigate some properties of m−hypoelliptic pseudodifferential operators for which define base on this class of symbols. also we consider maxi...

In this paper, applying two theorems of Ricceri and Bonanno, we will establish the existence of three weak solutions for a quasilinear elliptic system. Indeed, we will assign a differentiable nonlinear operator to a differential equation system such that the critical points of this operator are weak solutions of the system. In this paper, applying two theorems of R...

Journal: :iranian journal of science and technology (sciences) 2015
r. w. ibrahim

the complex-step derivative approximation is applied to compute numerical derivatives. in this study, we propose a new formula of fractional complex-step method utilizing jumarie definition. based on this method, we illustrated an approximate analytic solution for the fractional cauchy-euler equations. application in image denoising is imposed by introducing a new fractional mask depending on s...

In this work, a non-integer order Airy equation involving Liouville differential operator is considered. Proposing an undetermined integral solution to the left fractional Airy differential equation, we utilize some basic fractional calculus tools to clarify the closed form. A similar suggestion to the right FADE, converts it into an equation in the Laplace domain. An illustration t...

Journal: :bulletin of the iranian mathematical society 2011
r. aghalary a. ebadian z.-g. wang

Journal: :bulletin of the iranian mathematical society 2015
m. r. jabbarzadeh f. talebi

in this paper, we consider weighted composition operators betweenmeasurable differential forms and then some classic properties of these operators are characterized.

Journal: :iranian journal of science and technology (sciences) 2011
q. x yang

we investigate a class of fourth-order differential operators with eigenparameter dependent boundary conditions and transmission conditions. a self-adjoint linear operator a is defined in a suitable hilbert space h such that the eigenvalues of such a problem coincide with those of a . we discuss asymptotic behavior of its eigenvalues and completeness of its eigenfunctions. finally, we obtain th...

Journal: :bulletin of the iranian mathematical society 0
á. barciz department of economics‎, ‎babes-bolyai university‎, ‎400591 cluj-napoca‎, ‎romania and ‎institute of applied mathematics‎, ‎'obuda university‎, ‎1034 budapest‎, ‎hungary. s. kant department of mathematics‎, ‎government dungar college‎, ‎334001 bikaner‎, ‎india. j‎. ‎k‎. ‎ prajapat department of mathematics‎, ‎central university of rajasthan‎, ‎305817 kishangarh‎, ‎rajasthan‎, ‎india.

an operator associated with the wright function is introduced in the open unit disk. differential subordination and superordination results associated with this operator are obtained by investigating appropriate classes of admissible functions. in particular, some inequalities for modified bessel functions are also obtained.

Journal: :iranian journal of science and technology (sciences) 2008
a. m. akhmedov

in the present paper an operator-differential equation of second order in complex domain isconsidered when the coefficients have singularity of pole type at the point z=0. a theorem of existence of thesolution of the equation is proved and the spectral property of the solution is separately investigated when thecoefficients are spectral operators.

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