Analytic-bilinear approach is used to study continuous and discrete non-iso
spectral symmetries of the generalized KP hierarchy. It is shown that Mobiu
s symmetry transformation for the singular manifold equation leads to conti
nuous or discrete non-isospectral symmetry of the basic (scalar or multicom
ponent KP) hierarchy connected with binary Backlund transformation. A more
general class of multicomponent Mobius-type symmetries is studied. It is de
monstrated that symmetry constraints of KP hierarchy defined using multicom
ponent Mobius-type symmetries give rise to Calogero-Moser system. (C) 2001
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