Abstract
We study the algebraic implications of the non-independence property and variants thereof (dp-minimality) on infinite fields, motivated by the conjecture that all such fields which are neither real closed nor separably closed admit a (definable) henselian valuation. Our results mainly focus on Hahn fields and build up on Will Johnson’s “The canonical topology on dp-minimal fields” (J Math Log 18(2):1850007, 2018).
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Acknowledgements
We would like to thank I. Efrat, M. Hils, F. Jahnke, M. Kamensky, F.-V. Kuhlmann and P. Simon for several ideas, corrections and suggestions.
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K. Dupont: Partially supported by a Minerva fellowship and by ISF grant No. 23/09.
A. Hasson: Partially supported by GIF Grant 2165/2011 and by ISF Grant 181/16.
S. Kuhlmann: Partially supported by AFF grant from the University of Konstanz.
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Dupont, K., Hasson, A. & Kuhlmann, S. Definable valuations induced by multiplicative subgroups and NIP fields. Arch. Math. Logic 58, 819–839 (2019). https://doi.org/10.1007/s00153-019-00661-2
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DOI: https://doi.org/10.1007/s00153-019-00661-2