Evans, David M. and Pastori, Elisabetta (2011) Second cohomology groups and finite covers of infinite symmetric groups. Journal of Algebra, 330 (1). pp. 221-233.

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Abstract

For O an infinite set, k?2 and W the set of k-sets from O, there is a natural closed permutation group Gk which is a non-split extension View the MathML source. We classify the closed subgroups of Gk which project onto Sym(O). The question arises in model theory as a problem about finite covers, but here we formulate and solve it in algebraic terms.

Item Type:	Article
Faculty \ School:	Faculty of Science > School of Mathematics
Depositing User:	Users 2731 not found.
Date Deposited:	20 Oct 2011 08:27
Last Modified:	13 May 2020 23:38
URI:	https://ueaeprints.uea.ac.uk/id/eprint/35090
DOI:	10.1016/j.jalgebra.2010.12.004

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