Fields with almost small absolute Galois group
Arno Fehm, Franziska Jahnke

TL;DR
This paper constructs specific fields with infinitely many degree-n extensions while maintaining finiteness in certain multiplicative groups across all finite extensions, revealing new structural properties of such fields.
Contribution
It introduces a method to construct fields with infinitely many degree-n extensions and finite multiplicative group quotients across all finite extensions.
Findings
Fields with infinitely many degree-n extensions are constructed.
Finiteness of E*/(E*)^n holds for all finite extensions E.
New structural properties of these special fields are established.
Abstract
We construct and study fields F with the property that F has infinitely many extensions of some fixed degree, but E*/(E*)^n is finite for every finite extension E of F and every n>0.
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Taxonomy
TopicsAlgebraic Geometry and Number Theory
