Cyclotomic splitting fields
Author:
Murray M. Schacher
Journal:
Proc. Amer. Math. Soc. 25 (1970), 630-633
MSC:
Primary 12.10
DOI:
https://doi.org/10.1090/S0002-9939-1970-0257037-6
MathSciNet review:
0257037
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Abstract | References | Similar Articles | Additional Information
Abstract: Suppose $k$ is an algebraic number field and $D$ a finite-dimensional central division algebra over $k$. It is well known that $D$ has infinitely many maximal subfields which are cyclic extensions of $k$. From the point of view of group representations, however, the natural splitting fields are the cyclotomic ones. Accordingly it has been conjectured that $D$ must have a cyclotomic splitting field which contains a maximal subfield. The aim of this paper is to show that the conjucture is false; we will construct a counter-example of exponent $p$, one for every prime $p$.
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Additional Information
Keywords:
Cyclotomic,
local invariant,
maximal subfield,
norm,
splitting field,
totally ramified,
valuation
Article copyright:
© Copyright 1970
American Mathematical Society