Second cohomology groups and finite covers

Details Second cohomology groups and finite covers Second cohomology groups and finite covers

2009-09-02

arxiv.org/abs/0909.0366v2

Journal of Algebra 330 (2011), 221-233

Mathematics

Group Theory

Typos corrected; change of title to 'Second cohomology groups and finite covers of infinite symmetric groups' in published ver

Scientific paper

10.1016/j.jalgebra.2010.12.004

For D an infinite set, k>1 and W the set of k-sets from D, there is a natural
closed permutation group G_k which is a non-split extension of \mathbb{Z}_2^W
by \Sym(D). We classify the closed subgroups of G_k which project onto
\Sym(D)$. The question arises in model theory as a problem about finite covers,
but here we formulate and solve it in algebraic terms.

Affiliated with

Also associated with

No associations

Rating

Second cohomology groups and finite covers does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Second cohomology groups and finite covers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Second cohomology groups and finite covers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-12228