Abstract
Following an idea of Marjanović [9] we prove an extensive generalization of the Blaschke convergence theorem. Using similar methods we are able to give the solution of a problem concerning the compactness of families of starshaped sets in a topological linear space, which was posed by Valentine [11].
Similar content being viewed by others
Literatur
BLASCHKE, W.: Kreis und Kugel. Walter de Gruyter u. Co, Berlin 1956 (zweite Auflage)
BOURBAKI, N.: Topologie générale. Chap. I. II, 4ème ed., Hermann, Paris 1965
DUGUNDJI, J.: Topology (2nd printing), Allyn and Bacon Inc., Boston 1966
FRINK, O.: Topology in Lattices. Trans. Amer. Math. Soc., Vol. 51, 1942, pp. 569–582
HAUSDORFF, F.: Grundzüge der Mengenlehre. Chelsea Publishing Comp., New York 1949 (Nachdruck der deutschen Ausgabe von 1914)
HUKUHARA, M.: Sur l'application semi-continue dont la valeur est un compact convex Funkcial. Ekvac., Vd. 10, 1957, pp. 43–66
KELLEY, J.L.: Hyperspaces of a continuum. Trans. Amer. Math. Soc., Vol. 52, 1942, pp. 22–36
KELLEY, J.L.: General topology. D. van Nostrand Comp. Inc., New York 1955
MARJANOVIĆ, M.: Topologies on collections of closed subsets. Publ. Inst. Math. (Beograd), Vol. 6 (20), 1966, pp. 125–130
MICHAEL, E.: Topologies on spaces of subsets. Trans. Amer. Math. Soc., Vol 71, 1951, pp.152–182
VALENTINE, F.A.: Konvexe Mengen. BI-Hochschultaschenbücher, Nr. 402/402a, Mannheim 1968
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Dierolf, P. Über den Auswahlsatz von Blaschke und ein Problem von Valentine. Manuscripta Math 3, 289–304 (1970). https://doi.org/10.1007/BF01338661
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01338661