On the number of intersection points of the contour of an amoeba with a line

Lionel Lang, Boris Shapiro, Eugenii Shustin

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

In this note, we investigate the maximal number of intersection points of a line with the contour of a hypersurface amoeba in Rn. We define the latter number to be the R-degree of the contour. We also investigate the R-degree of related sets such as the boundary of an amoeba and the amoeba of the real part of a hypersurface defined over R. For all these objects, we provide bounds for the respective R-degrees.

Original languageEnglish
Pages (from-to)1335-1353
Number of pages19
JournalIndiana University Mathematics Journal
Volume70
Issue number4
DOIs
StatePublished - 2021

Funding

FundersFunder number
Vetenskapsrådet2016-04416

    Keywords

    • Amoeba
    • Contour
    • R-degree
    • Tropical hypersurface

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