Publications > Preprint server > Preprint Number 1560
Preprint Number 1560
1560. Krzysztof Jan Nowak Definable retractions over Henselian valued fields with analytic structure E-mail: Submission date: 28 January 2019 Abstract: Let K be a Henselian, non-trivially valued field with separated analytic structure. We prove the existence of definable retractions onto an arbitrary closed definable subset of K^{n}. Hence directly follow definable non-Archimedean versions of the extension theorems by Tietze--Urysohn and Dugundji. This generalizes our previous paper dealing with complete non-Archimedean fields with separated power series and remains true for Henselian valued fields with strictly convergent analytic structure, because every such a structure can be extended in a definitional way to a separated analytic structure. Our proof uses a variant of the one from that paper, based on canonical resolution of singularities, and a model-theoretic compactness argument. Mathematics Subject Classification: Keywords and phrases: |
Last updated: March 23 2021 09:21 | Please send your corrections to: |