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On the order map for hypersurface coamoebas
Stockholm University, Faculty of Science, Department of Mathematics.
Stockholm University, Faculty of Science, Department of Mathematics.
2015 (English)In: Arkiv för matematik, ISSN 0004-2080, E-ISSN 1871-2487, Vol. 53, no 1, 79-104 p.Article in journal (Refereed) Published
Abstract [en]

Given a hypersurface coamoeba of a Laurent polynomial f, it is an open problem to describe the structure of the set of connected components of its complement. In this paper we approach this problem by introducing the lopsided coamoeba. We show that the closed lopsided coamoeba comes naturally equipped with an order map, i.e. a map from the set of connected components of its complement to a translated lattice inside the zonotope of a Gale dual of the point configuration . Under a natural assumption, this map is a bijection. Finally we use this map to obtain new results concerning coamoebas of polynomials of small codimension.

Place, publisher, year, edition, pages
2015. Vol. 53, no 1, 79-104 p.
National Category
Mathematics
Identifiers
URN: urn:nbn:se:su:diva-116756DOI: 10.1007/s11512-013-0195-yISI: 000351084500004OAI: oai:DiVA.org:su-116756DiVA: diva2:811480
Note

AuthorCount:2;

Available from: 2015-05-12 Created: 2015-04-27 Last updated: 2017-12-04Bibliographically approved

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