On the non-existence of cyclic splitting fields for division algebras

被引:0
|
作者
Motiee, Mehran [1 ]
机构
[1] Babol Noshirvani Univ Technol, Fac Basic Sci, Babol Sar, Iran
关键词
Division algebra; splitting field; valuation;
D O I
10.1515/forum-2016-0121
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
Let D be a division algebra over its center F of degree n. Consider the group mu(Z)(D) = mu(n)(F)/Z(D'), where mu(n)(F) is the group of all the n-th roots of unity in F*, and Z(D') is the center of the commutator subgroup of the group of units D* of D. It is shown that if mu(Z)(D circle times(F) L) not equal 1 for some L containing all the primitive n(k)-th roots of unity for all positive integers k, then D is not split by any cyclic extension of F. This criterion is employed to prove that some special classes of division algebras are not cyclically split.
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页码:385 / 395
页数:11
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