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Date: | 1985 |
Abstract: | The theory of central extensions has a lot of analogy with the theory of covering spaces. In this paper we show that the category of central extensions of a perfect group and a certain category of covering spaces of a certain space are equivalent (see Theorem 1). Then the facts about central extensions will follow from the corresponding facts about coverings (see Corollaries 1-3). We start with some definitions to make this work selfcontained. |
Rights: | Tots els drets reservats. |
Language: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Published in: | Publicacions de la Secció de Matemàtiques, V. 29 n. 2/3 (1985) p. 145-153, ISSN 0210-2978 |
9 p, 156.1 KB |