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On the Expansion Coefficients of KP Tau Function (1704.03659v1)
Published 12 Apr 2017 in nlin.SI, math-ph, math.CO, math.MP, and math.QA
Abstract: We study the expansion coefficients of the tau function of the KP hierarchy. If the tau function does not vanish at the origin, it is known that the coefficients are given by Giambelli formula and that it characterizes solutions of the KP hierarchy. In this paper, we find a generalization of Giambelli formula to the case when the tau function vanishes at the origin. Again it characterizes solutions of the KP hierarchy.
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