GALOIS EXTENSIONS AND CROSSED PRODUCTS
نویسندگان
چکیده
منابع مشابه
Crossed Products and Cleft Extensions for Coquasi-hopf Algebras
The notion of crossed product with a coquasi-Hopf algebra H is introduced and studied. The result of such a crossed product is an algebra in the monoidal category of right H-comodules. We give necessary and sufficient conditions for two crossed products to be equivalent. Then, two structure theorems for coquasi Hopf modules are given. First, these are relative Hopf modules over the crossed prod...
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E. Witt has given a theory of abelian extensions of fields containing sufficiently many roots of unity which consists essentially, as has been remarked before, in applying the theory of characters of finite abelian groups. There exists now a sufficiently developed theory of crossed characters, and it is the object of this note to show that a fairly complete and simple theory of radical extensio...
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ژورنال
عنوان ژورنال: Hokkaido Mathematical Journal
سال: 1968
ISSN: 0385-4035
DOI: 10.14492/hokmj/1530064933