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Some Higher Order Complex Vector Functional Equations [PDF]

open access: yesCzechoslovak Mathematical Journal, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
exaly   +3 more sources

EQUIVALENCE OF THE FREDHOLM SOLVABILITY CONDITION FOR THE NEUMANN PROBLEM TO THE COMPLEMENTARITY CONDITION

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2021
The methods of complex analysis constitute the classical direction in the study of elliptic equations and mixed-type equations on the plane and fundamental results have now been obtained. In the early 60s of the last century, a new theoretical-functional
B. D. Koshanov, A. D. Kuntuarova
doaj   +1 more source

Exact Solutions of Reaction–Diffusion PDEs with Anisotropic Time Delay

open access: yesMathematics, 2023
This study is devoted to reaction–diffusion equations with spatially anisotropic time delay. Reaction–diffusion PDEs with either constant or variable transfer coefficients are considered.
Andrei D. Polyanin, Vsevolod G. Sorokin
doaj   +1 more source

Grounds for Searching the Best Solution for Controlling the Pressurized Water Reactor in Dynamic Modes when Changing the Controlled Parameters

open access: yesEnergy Engineering and Control Systems, 2021
The article focused on the development of information technology for the optimization of control over complex dynamic systems at the stage of their design that should realize possibilities of modeling of linear and nonlinear dynamic systems, the analysis
Taia Petik   +3 more
doaj   +1 more source

Exact solutions of nonlinear delay reaction–diffusion equations with variable coefficients

open access: yesPartial Differential Equations in Applied Mathematics, 2021
A modified method of functional constraints is used to construct the exact solutions of nonlinear equations of reaction–diffusion type with delay and which are associated with variable coefficients.
M.O. Aibinu, S.C. Thakur, S. Moyo
doaj   +1 more source

Methods for Constructing Complex Solutions of Nonlinear PDEs Using Simpler Solutions

open access: yesMathematics, 2021
This paper describes a number of simple but quite effective methods for constructing exact solutions of nonlinear partial differential equations that involve a relatively small amount of intermediate calculations.
Alexander V. Aksenov, Andrei D. Polyanin
doaj   +1 more source

A New Three-Step Root-Finding Numerical Method and Its Fractal Global Behavior

open access: yesFractal and Fractional, 2021
There is an increasing demand for numerical methods to obtain accurate approximate solutions for nonlinear models based upon polynomials and transcendental equations under both single and multivariate variables. Keeping in mind the high demand within the
Asifa Tassaddiq   +5 more
doaj   +1 more source

Stability of Complex Functional Equations in 2-Banach Spaces [PDF]

open access: yesZurnal matematiceskoj fiziki, analiza, geometrii, 2021
Summary: In the paper, we obtain some results for the Hyers-Ulam stability of the following functional equations: \[ \mathsf{q}(x+iy)+\mathsf{q}(x-iy)+\mathsf{q}(y+ix)+\mathsf{q}(y-ix)=2\mathsf{q}(x)+2\mathsf{q}(y) \] and \[ \mathsf{q}(x+iy)+\mathsf{q}(x-iy)+\mathsf{q}(y+ix)+\mathsf{q}(y-ix)=0 \] in the setting of 2-Banach spaces.
Rana, Anshul   +2 more
openaire   +2 more sources

Stepanov-like doubly weighted pseudo almost automorphic mild solutions for fractional stochastic neutral functional differential equations

open access: yesJournal of Inequalities and Applications, 2023
This paper first investigates the equivalence of the space and translation invariance of Stepanov-like doubly weighted pseudo almost automorphic stochastic processes for nonequivalent weight functions; secondly, based on semigroup theory, fractional ...
Ping Zhu
doaj   +1 more source

Universal differential equations for glacier ice flow modelling [PDF]

open access: yesGeoscientific Model Development, 2023
Geoscientific models are facing increasing challenges to exploit growing datasets coming from remote sensing. Universal differential equations (UDEs), aided by differentiable programming, provide a new scientific modelling paradigm enabling both complex ...
J. Bolibar   +8 more
doaj   +1 more source

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