𝔖 Bobbio Scriptorium
✦   LIBER   ✦

P. Hall's covering group and embeddings of countable cc-groups

✍ Scribed by González, M.; Otal, J.


Book ID
120636371
Publisher
Taylor and Francis Group
Year
1990
Tongue
English
Weight
286 KB
Volume
18
Category
Article
ISSN
0092-7872

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Set Covering and Serre's Theorem on the
✍ Ergün Yalçin 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 150 KB

We define a group theoretical invariant, denoted by s G , as a solution of a certain set covering problem and show that it is closely related to chl(G), the cohomology length of a p-group G. By studying s G we improve the known upper bounds for the cohomology length of a p-group and determine chl(G)