نتایج جستجو برای: exponential operational method

تعداد نتایج: 1746613  

Journal: :The Quarterly Journal of Mathematics 2003

1997
David McAllester Nevin Heintze

We formally deene the set-based abstraction of any language whose operational semantics can be deened by environment evaluation. The Aiken-Wimmers soft type system precisely corresponds to this set-based abstraction under their operational semantics. The Heintze set-based analysis is precisely this set-based abstraction under a diierent operational semantics. In general, set-based abstraction d...

Journal: :international journal of environmental research 0
s. a. hashemi monfared university of sistan and baluchestan, iran m. dehghani darmian university of sistan and baluchestan, iran

water quality prediction is a valuable tool for pollutant control in aquatic environments. a river system is selected and one-dimensional flow is assumed for the simulation of pollutant transport in this paper. advective and diffusive terms of transport equation are considered separately. different functions of advective transport are proposed and applied for a specified velocity on the discret...

Sinc-Galerkin method based upon double exponential transformation for solving Troesch's problem was given in this study. Properties of the Sinc-Galerkin approach were utilized to reduce the solution of nonlinear two-point boundary value problem to same nonlinear algebraic equations, also, the matrix form of the nonlinear algebraic equations was obtained.The error bound of the method was found. ...

Journal: :iranian journal of numerical analysis and optimization 0

this paper presents an operational formulation of the tau method based upon orthogonal polynomials by using a reduced set of matrix operations for the numerical solution of nonlinear multi-order fractional differential equations(fdes). the main characteristic behind the approach using this technique is that it reduces such problems to those of solving a system of non-linear algebraic equations....

Journal: :international journal of industrial mathematics 0
m. mashoof‎ department of mathematics, lahijan branch, islamic azad university, lahijan, ‎iran.‎ a. h. refahi ‎sheikhani‎ department of mathematics, lahijan branch, islamic azad university, lahijan, ‎iran.‎

in recent years, there has been greater attempt to find numerical solutions of differential equations using wavelet's methods. the following method is based on vector forms of haar-wavelet functions. in this paper, we will introduce one dimensional haar-wavelet functions and the haar-wavelet operational matrices of the fractional order integration. also the haar-wavelet operational matrice...

Journal: :computational methods for differential equations 0
mohammad nabati basic of sciences, abadan faculty of petroleum engineering, petroleum university of technology, abadan, iran mahdi jalalvand department of mathematics, faculty of mathematical sciences and computer shahid chamran university, ahvaz, iran

sinc-galerkin method based upon double exponential transformation for solving troesch's problem was given in this study. properties of the sinc-galerkin approach were utilized to reduce the solution of nonlinear two-point boundary value problem to same nonlinear algebraic equations, also, the matrix form of the nonlinear algebraic equations was obtained.the error bound of the method was fo...

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