tailieunhanh - ASYMPTOTIC BOUNDARY VALUE PROBLEMS FOR EVOLUTION INCLUSIONS ´ˇ ¨ TOMAS FURST Received 24 January

ASYMPTOTIC BOUNDARY VALUE PROBLEMS FOR EVOLUTION INCLUSIONS ´ˇ ¨ TOMAS FURST Received 24 January 2005; Revised 12 July 2005; Accepted 17 July 2005 When solving boundary value problems on infinite intervals, it is possible to use continuation principles. Some of these principles take advantage of equipping the considered function spaces with topologies of uniform convergence on compact subintervals. This makes the representing solution operators compact (or condensing), but, on the other hand, spaces equipped with such topologies become more complicated. This paper shows interesting applications that use the strength of continuation principles and also presents a possible extension of such continuation principles. | ASYMPTOTIC BOUNDARY VALUE PROBLEMS FOR EVOLUTION INCLUSIONS TOMAS FURST Received 24 January 2005 Revised 12 July 2005 Accepted 17 July 2005 When solving boundary value problems on infinite intervals it is possible to use continuation principles. Some of these principles take advantage of equipping the considered function spaces with topologies of uniform convergence on compact subintervals. This makes the representing solution operators compact or condensing but on the other hand spaces equipped with such topologies become more complicated. This paper shows interesting applications that use the strength of continuation principles and also presents a possible extension of such continuation principles to partial differential inclusions. Copyright 2006 Tomas Furst. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. Introduction When solving boundary value problems on noncompact in particular on infinite intervals it is possible to use continuation principles. Unfortunatelly one cannot simply extend the Leray-Schauder type theorems because of the obstructions brought by the topology of uniform convergence on compact subintervals see 1 2 or 6 . This topology makes the representing solution operators compact or condensing but on the other hand causes closed convex sets of certain type to have empty interiors. The main aim of this paper is to propose a modification of the continuation principle originally given by Andres and Bader 1 to partial differential inclusions in Banach spaces and to present a nontrivial application of its usage. Although the topology of uniform convergence on compact subintervals is well-known see 10 for the sake of completeness we recall some of its interesting properties in Section 2. We show an example of a closed and convex set which is often considered in applications and which has

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