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Applications of the Carathéodory theorem to PDEs

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Holly K., Orewczyk J.

Annales Polonici Mathematici

2000

tom 73

nr 1

1-27

We discuss and exploit the Carathéodory theorem on existence and uniqueness of an absolutely continuous solution x: ℐ (⊂ ℝ) → X of a general ODE $ẋ {(*)\over=} ℱ(t,x)$ for the right-hand side ℱ : dom ℱ ( ⊂ ℝ × X) → X taking values in an arbitrary Banach space X, and a related result concerning an extension of x. We propose a definition of solvability of (*) admitting all connected ℐ and unifying the cases "dom ℱ is open" and "dom ℱ = ℐ × Ω for some Ω ⊂ X". We show how to use the theorems mentioned above to get approximate solutions of a nonlinear parabolic PDE and exact solutions of a linear evolution PDE with distribution data.

Ograniczanie wyników

1 Annales Polonici Mathematici

1 Holly K.

1 Orewczyk J.

1 2000

Wyniki wyszukiwania

Applications of the Carathéodory theorem to PDEs