Lv. Bogdanov et Bg. Konopelchenko, Mobius invariant integrable lattice equations associated with KP and 2DTL hierarchies, PHYS LETT A, 256(1), 1999, pp. 39-46
The integrable lattice equations arising in the context of singular manifol
d equations for scalar, multicomponent KP hierarchies and 2D Toda lattice h
ierarchy are considered. They generate the corresponding continuous hierarc
hy of singular manifold equations, its Backlund transformations and differe
nt forms of superposition principles; their distinctive feature is invarian
ce under the action of Mobius transformation. Geometric interpretation of t
hese discrete equations is given. (C) 1999 Published by Elsevier Science B.
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