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\title{Soliton amoebas}
\author{Boris G. Konopelchenko, \underline{Mario Angelelli} \\University of Salento and Sezione INFN, Lecce}
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\maketitle
Singular sectors of a family of solutions of the KP II equation are revisited. The structure of the zero loci of Wronskian $\tau$-functions for a subclass of solutions with different combinations of signs of pre-exponential factors is analyzed.
It is shown that the zero loci have an amoeba-type form and a particolar inclusion property.
Such \emph{soliton amoebas} are connected with a particular class of statistical amoebas associated to a family of partition functions in statistical physics.
Constraints on the possible choices of signs preserving the Wronskian form and the relation with general (unconstrained) statistical amoebas are explored.
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