منابع مشابه
Descent Construction for GSpin Groups: Main Results and Applications
The purpose of this note is to announce an extension of the descent method of Ginzburg, Rallis, and Soudry to the setting of essentially self dual representations. This extension of the descent construction provides a complement to recent work of Asgari and Shahidi [A-S] on the generic transfer for general Spin groups as well as to the work of Asgari and Raghuram [A-R] on cuspidality of the ext...
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We find a criterion for a morphism of coalgebras over a Barr-exact category to be effective descent and determine (effective) descent morphisms for coalgebras over toposes in some cases. Also, we study some exactness properties of endofunctors of arbitrary categories in connection with natural transformations between them as well as those of functors that these transformations induce between co...
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In 1934, Garrett Birkhoff has shown that the number of isomorphism classes of finite metabelian groups of order p 22 tends to infinity with p. More precisely, for each prime number p there is a family (M λ) λ=0,... ,p−1 of indecom-posable and pairwise nonisomorphic metabelian p-groups of the given order. In this manuscript we use recent results on the classification of possible embeddings of a ...
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We consider the following “field descent problem” for principal ideals I of number fields K. Assume that I is invariant under a Galois automorphism σ of K; decide wether there is a generator g of I with gσ = g, i.e., wether I can be generated by an element of Fix σ. We solve this problem for certain ideals by elementary methods. As a consequence, we are able to exhibit large explicit subgroups ...
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ژورنال
عنوان ژورنال: Memoirs of the American Mathematical Society
سال: 2016
ISSN: 0065-9266,1947-6221
DOI: 10.1090/memo/1148