Results 71 to 80 of about 1,609 (176)

New analytical wave solutions of fractional order DMBBM and Bateman-Burgers equations

open access: yesFrontiers in Applied Mathematics and Statistics
The purpose of this article is to explore a new method for solving one of the nonlinear partial differential equations (NPDE) which is difficult to solve.
Nathanon Sribua-Iam   +1 more
doaj   +1 more source

Beyond circular trigonometry: Parabolic functions from geometric identities

open access: yesAlifmatika
This paper presents an innovative extension of trigonometric functions to parabolic geometry, introducing the parabolic sine (sinp u) and parabolic cosine (cosp u) functions.
Laith H. M. Al-ossmi
doaj   +1 more source

Approximation of entire functions of exponential type by trigonometric sums

open access: yes, 2020
Let $σ>0$. For $1\le p\le \infty$, the Bernstein space $B^p_σ$ is a Banach space of all $f\in L^p(R)$ such that $f$ is bandlimited to $σ$; that is, the distributional Fourier transform of $f$ is supported in $[-σ, σ]$. We study the approximation of\ $f\in B^p_σ by finite trigonometric sums \[ P_τ(x)=χ_τ(x) \sum_{|k|\le στ/π}c_{k,τ} e^{i\fracπτk x } \
openaire   +2 more sources

Exploring soliton dynamics and wave interactions in an extended Kadomtsev-Petviashvili-Boussinesq equation

open access: yesAin Shams Engineering Journal
This research investigates the extended Kadomtsev-Petviashvili-Boussinesq equation, relevant in numerous scenarios involving dissipative media. To initiate the analysis, a Hirota bilinear form is applied, leading to a Bäcklund transformation for the ...
Nauman Raza   +4 more
doaj   +1 more source

Approximation of nonnegative functions by means of exponentiated trigonometric polynomials

open access: yesJournal of Computational and Applied Mathematics, 2002
The author extends work by \textit{J. M. Borwein} and \textit{W. Z. Huang} [SIAM J. Optim. 5, No.~1, 68-99 (1995; Zbl 0820.49016)] on the construction of a trigonometric or algebraic polynomial whose exponential approximates the given function. This is done by means of a Toeplitz matrix. Convergence conditions are given and an error analysis is carried
openaire   +2 more sources

To the issue of forecasting price dynamics in the property valuation

open access: yesNauka ta progres transportu, 2012
The problems of short-, medium- and long-term forecasting price dynamics are considered. The improvement of short-term forecasting techniques based on exponential smoothing is proposed.
O.N. Gnennyi
doaj  

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