in this paper, we consider non-linear ginsburg-pitaevski-gross equation with the rosen-morse and modifiedwoods-saxon potentials which is corresponding to the quantum vortices and has important applications in turbulence theory. we use the runge- kutta-fehlberg approximation method to solve the resulting non-linear equation.

Approximation theory is an area of mathematics that has become indispensable to the computational sciences. The approximation of magnitudes and functions describing some physical behavior is an integral part of scientific computing, queueing problems, neural networks, graphics, robotics, network traffic, financial trading, antenna design, floating-point arithmetic, image processing, speech anal...

This paper summarizes a number of discretization and solution tech niques that are commonly referred to as nite volume and mixed nite element methods We describe some of them in more detail that is provide a common discretization strategy as well as address the issue of solving the resulting systems of linear algebraic equations The paper focuses on locally conservative discretizations that inc...

the electronic structure, energy band structure and electronic density of 2 sno ceramic in cubicphase have been investigated using first principle full potential-linearized augmented plane wave (fp-lapw)method within density functional theory (dft). local density approximation (lda) and the generalizedgradient approximation (gga), which are based on exchange- correlation energy optimization wer...

the aim of this paper is to introduce and study set- valued homomorphism on lattices and t-rough lattice with respect to a sublattice. this paper deals with t-rough set approach on the lattice theory. the result of this study contributes to, t-rough fuzzy set and approximation theory and proved in several papers. keywords: approximation space; lattice; prime ideal; rough ideal; t-rough set; set...

the main purpose of this paper is to consider the t-best simultaneousapproximation in fuzzy normed spaces. we develop the theory of t-bestsimultaneous approximation in quotient spaces. then, we discuss the relationshipin t-proximinality and t-chebyshevity of a given space and its quotientspace.