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On the Number of Intersection Points of the Contour of an Amoeba with a Line
Stockholm University, Faculty of Science, Department of Mathematics.ORCID iD: 0000-0001-8640-5591
Stockholm University, Faculty of Science, Department of Mathematics.
Number of Authors: 32021 (English)In: Indiana University Mathematics Journal, ISSN 0022-2518, E-ISSN 1943-5258, Vol. 70, no 4, p. 1335-1353Article in journal (Refereed) Published
Abstract [en]

In this note, we investigate the maximal number of intersection points of a line with the contour of a hypersurface amoeba in R-n. 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.

Place, publisher, year, edition, pages
2021. Vol. 70, no 4, p. 1335-1353
Keywords [en]
Amoeba, contour, tropical hypersurface, R-degree
National Category
Mathematics
Identifiers
URN: urn:nbn:se:su:diva-197801DOI: 10.1512/iumj.2021.70.8627ISI: 000691776600007OAI: oai:DiVA.org:su-197801DiVA, id: diva2:1603332
Available from: 2021-10-15 Created: 2021-10-15 Last updated: 2022-02-28Bibliographically approved

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Lang, LionelShapiro, Boris

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