Higher convexity of coamoeba complements

Mounir Nisse and Frank Sottile.

    We show that the complement of the closure of the coamoeba of a variety of codimension k+1 is k-convex, in the sense of Gromov and Henriques. This generalizes a result of Nisse for hypersurface coamoebas. We use this to show that the complement of the nonarchimedean coamoeba of a variety of codimension k+1 is k-convex



The manuscript in pdf.
Previous