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Abstract
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Let
be prime,
the field of
-adic numbers,
and
an Eisenstein
polynomial of degree
.
We give necessary and sufficient conditions on the coefficients of
for its Galois group to be isomorphic to the dihedral group of order
.
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Keywords
Eisenstein polynomials, $p$-adic fields, dihedral, totally
ramified extensions
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Mathematical Subject Classification
Primary: 11S05, 11S15, 11S20
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Milestones
Received: 20 September 2020
Revised: 2 February 2021
Accepted: 12 February 2021
Published: 17 July 2021
Communicated by Kenneth S. Berenhaut
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