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On the semilinear integro-differential nonlocal Cauchy problem

Piotr Majcher, Magdalena Roszak (2005)

Discussiones Mathematicae, Differential Inclusions, Control and Optimization

In this paper, we prove an existence theorem for the pseudo-non-local Cauchy problem x ' ( t ) + A x ( t ) = f ( t , x ( t ) , t t k ( t , s , x ( s ) ) d s ) , x₀(t₀) = x₀ - g(x), where A is the infinitesimal generator of a C₀ semigroup of operator T ( t ) t > 0 on a Banach space. The functions f,g are weakly-weakly sequentially continuous and the integral is taken in the sense of Pettis.

On the structure of the set of solutions of a Volterra integral equation in a Banach space

Krzysztof Czarnowski (1994)

Annales Polonici Mathematici

The set of solutions of a Volterra equation in a Banach space with a Carathéodory kernel is proved to be an δ , in particular compact and connected. The kernel is not assumed to be uniformly continuous with respect to the unknown function and the characterization is given in terms of a B₀-space of continuous functions on a noncompact domain.

On the Volterra integral equation with weakly singular kernel

Stanisław Szufla (2006)

Mathematica Bohemica

We give sufficient conditions for the existence of at least one integrable solution of equation x ( t ) = f ( t ) + 0 t K ( t , s ) g ( s , x ( s ) ) d s . Our assumptions and proofs are expressed in terms of measures of noncompactness.

One-dimensional model describing the non-linear viscoelastic response of materials

Tomáš Bárta (2014)

Commentationes Mathematicae Universitatis Carolinae

In this paper we consider a model of a one-dimensional body where strain depends on the history of stress. We show local existence for large data and global existence for small data of classical solutions and convergence of the displacement, strain and stress to zero for time going to infinity.

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