Approximate iterative method and the existence of solutions of nonlinear parabolic differential-functional equations
Stanisław Brzychczy (1983)
Annales Polonici Mathematici
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Stanisław Brzychczy (1983)
Annales Polonici Mathematici
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Milena Matusik (2013)
Applicationes Mathematicae
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This paper is concerned with iterative methods for parabolic functional differential equations with initial boundary conditions. Monotone iterative methods are discussed. We prove a theorem on the existence of solutions for a parabolic problem whose right-hand side admits a Jordan type decomposition with respect to the function variable. It is shown that there exist Newton sequences which converge to the solution of the initial problem. Differential equations with deviated variables...
Milena Matusik (2012)
Annales Polonici Mathematici
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The paper deals with the initial boundary value problem of Robin type for parabolic functional differential equations. The unknown function is the functional variable in the equation and the partial derivatives appear in the classical sense. A theorem on the existence of a classical solution is proved. Our formulation and results cover differential equations with deviated variables and differential integral problems.
Agnieszka Bartłomiejczyk (2007)
Annales Polonici Mathematici
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We consider the Cauchy problem for nonlinear parabolic equations with functional dependence represented by the Hale functional acting on the unknown function and its gradient. We prove convergence theorems for a general quasilinearization method in natural subclasses of unbounded solutions.
Anna Pudełko (2007)
Annales Polonici Mathematici
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We consider the initial value problem for an infinite system of differential-functional equations of parabolic type. General operators of parabolic type of second order with variable coefficients are considered and the system is weakly coupled. The solutions are obtained by the monotone iterative method. We prove theorems on weak partial differential-functional inequalities as well the existence and uniqueness theorems in the class of continuous bounded functions and in the class of...
Z. Krzeszowiak-Dybiec (1980)
Annales Polonici Mathematici
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Z. Krzeszowiak-Dybiec (1980)
Annales Polonici Mathematici
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P. Besala, G. Paszek (1980)
Annales Polonici Mathematici
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Agnieszka Bartłomiejczyk, Henryk Leszczyński (2014)
Annales Polonici Mathematici
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We consider the Cauchy problem for nonlinear parabolic equations with functional dependence. We prove Schauder-type existence results for unbounded solutions. We also prove existence of maximal solutions for a wide class of differential functional equations.
Katarzyna Sajbura (2005)
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
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Our aim is to study continuous solutions φ of the classical linear iterative equation φ(f(x,y)) = g(x,y)φ(x,y) + h(x,y), where the given function f is defined as a pair of means. We are interested in the case when f has no fixed points. In turns out that in such a case continuous solutions of (1) depend on an arbitrary function.
Stanisław Brzychczy (2001)
Annales Polonici Mathematici
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We consider the Fourier first initial-boundary value problem for an infinite system of weakly coupled nonlinear differential-functional equations of parabolic type. The right-hand sides of the system are functionals of unknown functions. The existence and uniqueness of the solution are proved by the Banach fixed point theorem.
Mukhigulashvili, S. (1995)
Memoirs on Differential Equations and Mathematical Physics
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Lomtatidze, A., Mukhigulashvili, S. (1997)
Memoirs on Differential Equations and Mathematical Physics
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Lomtatidze, A., Mukhigulashvili, S. (1997)
Memoirs on Differential Equations and Mathematical Physics
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Józef Myjak (1976)
Annales Polonici Mathematici
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Kiguradze, I., Půža, B. (1997)
Memoirs on Differential Equations and Mathematical Physics
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Partsvania, N. (2000)
Memoirs on Differential Equations and Mathematical Physics
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Jacek Szarski (1974)
Annales Polonici Mathematici
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P. Besala (1963)
Annales Polonici Mathematici
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