1983 Volume 52 Issue 12 Pages 4031-4033
A generalized version of the Hirota’s equation with linear inhomogeneities is shown to be equivalent to a generalized continuum Heisenberg ferromagnetic spin chain equation as well as to a generalized Wadati-Konno-Ichikawa-Shimizu (WKIS) type equation, both from geometrical and gauge considerations. The corresponding spectral problems are associated with moving eigenvalues.
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