Paál, György Topology of the universe. (English) Zbl 0876.00018 Symmetry Cult. Sci. 4, No. 1, 13-18 (1993). Summary: The unexpected possibility of a multiply connected character of the space of the Universe is demonstrated for the nonspecialists by using simple examples. Indications for the realization of this possibility in the actual Universe are briefly discussed and its cosmological implications mentioned. MSC: 00A69 General applied mathematics 83-01 Introductory exposition (textbooks, tutorial papers, etc.) pertaining to relativity and gravitational theory Keywords:Universe PDFBibTeX XMLCite \textit{G. Paál}, Symmetry Cult. Sci. 4, No. 1, 13--18 (1993; Zbl 0876.00018)