Elsevier

Discrete Mathematics

Volume 120, Issues 1–3, 12 September 1993, Pages 1-12
Discrete Mathematics

Wreath products and enlargements of groups

https://doi.org/10.1016/0012-365X(93)90560-GGet rights and content
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Abstract

To take care of the fact that a normal subgroup of a normal subgroup need not be normal in the original group, the concept of group extensions is generalized to the concept of group enlargements. This is related to wreath products. Applications are made to the calculation of algebraic fundamental groups.

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This work was partly supported by NSF grant DMS 91-01424.