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On the discrete modified KP hierarchy: tau functions, Fay identity and squared eigenfunction symmetries (2303.11550v1)
Published 21 Mar 2023 in nlin.SI
Abstract: In this paper, we prove the existence of tau functions of the discrete modified KP hierarchy and define the squared eigenfunction symmetry. Meanwhile, the Fay identity with its difference form, the squared eigenfunction potentials and the symmetry flow acting on tau functions are obtained.
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