English

Some results from algebraic geometry over Henselian real valued fields

Algebraic Geometry 2016-08-30 v6

Abstract

This paper develops algebraic geometry over Henselian real valued (i.e. of rank 1) fields KK, being a sequel to our paper about that over Henselian discretely valued fields. Several results are given including: a certain concept of fiber shrinking (a relaxed version of curve selection) for definable sets, the canonical projection Kn×KPmKnK^{n} \times K\mathbb{P}^{m} \to K^{n} and blow-ups of the KK-points of smooth KK-varieties are definably closed maps, a descent property for blow-ups, a version of the Lojasiewicz inequality for continuous rational functions and the theorem on extending continuous hereditarily rational functions, established for the real and pp-adic varieties in our joint paper with J. Kollar. The descent property enables application of desingularization and transformation to a normal crossing by blowing up in much the same way as over the locally compact ground field. Our approach applies quantifier elimination due to Pas.

Keywords

Cite

@article{arxiv.1312.2935,
  title  = {Some results from algebraic geometry over Henselian real valued fields},
  author = {Krzysztof Jan Nowak},
  journal= {arXiv preprint arXiv:1312.2935},
  year   = {2016}
}

Comments

This paper was included in the article "Some results of algebraic geometry over Henselian rank one valued fields", published in Selecta Mathematica, DOI 10.1007/s00029-016-0245-y, arXiv:1410.3280 [math.AG]

R2 v1 2026-06-22T02:24:55.100Z