On the existence and uniqueness of solutions of systems of differential equations with a deviated argument
T. Jankowski, M. Kwapisz (1972)
Annales Polonici Mathematici
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T. Jankowski, M. Kwapisz (1972)
Annales Polonici Mathematici
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C. Olech, A. Pliś (1967)
Colloquium Mathematicae
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P. Besala (1983)
Annales Polonici Mathematici
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Winkler, Jörg (1993)
Annales Academiae Scientiarum Fennicae. Series A I. Mathematica
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Krzysztof A. Topolski (2015)
Annales Polonici Mathematici
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We present an existence theorem for the Cauchy problem related to linear partial differential-functional equations of an arbitrary order. The equations considered include the cases of retarded and deviated arguments at the derivatives of the unknown function. In the proof we use Tonelli's constructive method. We also give uniqueness criteria valid in a wide class of admissible functions. We present a set of examples to illustrate the theory.
Josef Malík (2004)
Applications of Mathematics
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A model of a cable stayed bridge is proposed. This model describes the behaviour of the center span, the part between pylons, hung on one row of cable stays. The existence, the uniqueness of a solution of a time independent problem and the continuous dependence on data are proved. The existence and the uniqueness of a solution of a linearized dynamic problem are proved. A homogenizing procedure making it possible to replace cables by a continuous system is proposed. A nonlinear dynamic...
T. Śliwa (1988)
Applicationes Mathematicae
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Dalibor Pražák, Kumbakonam R. Rajagopal (2016)
Commentationes Mathematicae Universitatis Carolinae
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We study the vibrations of lumped parameter systems, the spring being defined by the classical linear constitutive relationship between the spring force and the elongation while the dashpot is described by a general implicit relationship between the damping force and the velocity. We prove global existence of solutions for the governing equations, and discuss conditions that the implicit relation satisfies that are sufficient for the uniqueness of solutions. We also present some counterexamples...
Qianqian Hou, Xiaojing Xu (2014)
Colloquium Mathematicae
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We prove that strong solutions of the Boussinesq equations in 2D and 3D can be extended as analytic functions of complex time. As a consequence we obtain the backward uniqueness of solutions.
Primo Brandi, Rita Ceppitelli (1986)
Annales Polonici Mathematici
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Eric Nabana (1999)
Annales de la Faculté des sciences de Toulouse : Mathématiques
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