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On Kneser Extensions

✍ Scribed by Pablo Lam-Estrada; Fernando Barrera-Mora; Gabriel Daniel Villa-Salvador

Book ID
102576166
Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
194 KB
Volume
201
Category
Article
ISSN
0021-8693

No coin nor oath required. For personal study only.

✦ Synopsis

Let ErF be a finite separable extension such that E s F G with F* F G F E*, GrF* a finite group, and such that there exists a 1᎐1 correspondence between the subfields of the extension ErF and the subgroups of GrF*, but ErF is not G-cogalois. A necessary and sufficient condition is given for the existence of ˜ãnother group G for the extension ErF to be G-cogalois.

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