Cyclic quartic fields with relative integral bases over their quadratic subfields

Cyclic quartic fields with relative integral bases over their quadratic subfields
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Proc. Amer. Math. Soc. 103 (1988), 687-694

DOI: https://doi.org/10.1090/S0002-9939-1988-0947640-3

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Explicit conditions are given for a cyclic quartic field to have a relative integral basis over its unique quadratic subfield.

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