Abstract
It is proved that the space of closed subgroupsL (G) of a locally compact σ-compact group G is a k-space if and only if each noncompact subgroup of G can be represented as the intersection of a countable number of open sets.
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I. V. Protasov, “Compacta in the space of subgroups of a topological group,” Ukr. Mat. Zh.,38, No. 5, 600–605 (1986).
I. V. Protasov, “Limits of compact subgroups in topological groups,” Dokl. Akad. Nauk UkrSSR, No. 10, 64–66 (1986).
V. D. Mazurov, Yu. I. Merzlyakov, and V. A. Churkin (eds.), Kourov Notebook [in Russian], 9th ed., Inst. Mat. Sib. Otd. Akad. Nauk SSSR, Novosibirsk (1982).
A. G. Piskunov, “Cardinality of open σ-compact sets in the space of noncompact subgroups of a topological group,” Ukr. Mat. Zh.,40, No. 6, 815–819 (1988).
A. V. Arkhangel'skii and V. I. Ponomarev, Foundations of General Topology in Problems and Exercises [in Russian], Nauka, Moscow (1980).
R. Engelking, Outline of General Topology, American Elsevier, New York (1968).
I. V. Protasov, “Local theorems for topological groups,” Izv. Akad. Nauk SSSR, Ser. Mat.,43, No. 6, 1430–1440 (1979).
I. V. Protasov, “Topological groups with compact lattice of closed subgroups,” Sib. Mat. Zh.,20, No. 2, 378–385 (1979).
K. Kuratowsky, Topology, Academic Press, New York (1969).
E. Hewitt and K. Ross, Abstract Harmonic Analysis, Springer-Verlag, New York (1970).
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Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 42, No. 6, pp. 789–794, June, 1990.
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Piskunov, A.G. Reconstruction of the vietoris topology from compacta in the space of closed subgroups. Ukr Math J 42, 697–701 (1990). https://doi.org/10.1007/BF01058916
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DOI: https://doi.org/10.1007/BF01058916