Characteristic polyhedra of singularities without completion: Part II

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Authors

  • Vincent Cossart
  • Bernd Schober

Research Organisations

External Research Organisations

  • Université Paris-Saclay
  • Carl von Ossietzky University of Oldenburg
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Details

Original languageEnglish
Pages (from-to)351-392
Number of pages42
JournalCollectanea mathematica
Volume72
Issue number2
Early online date22 Jun 2020
Publication statusPublished - May 2021

Abstract

Hironaka’s characteristic polyhedron is an important combinatorial object reflecting the local nature of a singularity. We prove that it can be determined without passing to the completion if the local ring is a G-ring and if additionally either it is Henselian, or a certain polynomiality condition (Pol) holds, or a mild condition (*) on the singularity holds. For example, the latter is fulfilled if the residue field is perfect.

Cite this

Characteristic polyhedra of singularities without completion: Part II. / Cossart, Vincent; Schober, Bernd.
In: Collectanea mathematica, Vol. 72, No. 2, 05.2021, p. 351-392.

Research output: Contribution to journalArticleResearchpeer review

Cossart V, Schober B. Characteristic polyhedra of singularities without completion: Part II. Collectanea mathematica. 2021 May;72(2):351-392. Epub 2020 Jun 22. doi: 10.1007/s13348-020-00291-5, 10.1007/s13348-021-00326-5
Cossart, Vincent ; Schober, Bernd. / Characteristic polyhedra of singularities without completion : Part II. In: Collectanea mathematica. 2021 ; Vol. 72, No. 2. pp. 351-392.
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