Subfields of algebraically maximal Kaplansky fields
classification
🧮 math.AC
keywords
fieldsmaximalkaplanskysubfieldsalgebraicallycontainextensionsimmediate
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Using the ramification theory of tame and Kaplansky fields, we show that maximal Kaplansky fields contain maximal immediate extensions of each of their subfields. Likewise, algebraically maximal Kaplansky fields contain maximal immediate algebraic extensions of each of their subfields. This study is inspired by problems that appear in henselian valued fields of rank higher than 1 when a Hensel root of a polynomial is approximated by the elements generated by a (transfinite) Newton algorithm.
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