Sosulski, Władysław Compactness and upper semicontinuity of solution set of functional- differential equations of hyperbolic type. (English) Zbl 0614.35061 Ann. Soc. Math. Pol., Ser. I, Commentat. Math. 25, 359-362 (1985). The author proves two theorems, one establishing the compactness and the other establishing the upper semi-continuity of the solution set of functional-differential equations of hyperbolic type under certain conditions. Reviewer: N.Maria Cited in 2 Documents MSC: 35L99 Hyperbolic equations and hyperbolic systems 35K15 Initial value problems for second-order parabolic equations 49J45 Methods involving semicontinuity and convergence; relaxation 34A60 Ordinary differential inclusions Keywords:compactness; upper semi-continuity; functional-differential equations; hyperbolic PDFBibTeX XMLCite \textit{W. Sosulski}, Ann. Soc. Math. Pol., Ser. I, Commentat. Math. 25, 359--362 (1985; Zbl 0614.35061)