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Tau-function of the B-Toda hierarchy

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arxiv 2303.17467 v1 pith:VLDJTGOL submitted 2023-03-30 nlin.SI math-phmath.MP

classification nlin.SImath-phmath.MP
keywords hierarchyb-todatau-functionbilinearconstraintcontinuediscretizationequations
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We continue the study of the B-Toda hierarchy (the Toda lattice with the constraint of type B) which can be regarded as a discretization of the BKP hierarchy. We introduce the tau-function of the B-Toda hierarchy and obtain the bilinear equations for it. Examples of soliton tau-functions are presented in the explicit form.

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