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Metrics on the set of states of a W∗-algebra

✍ Scribed by Nicolas Hadjisavvas


Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
360 KB
Volume
84
Category
Article
ISSN
0024-3795

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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)