An Approach to Master Symmetries of Lattice Equations
Benno Fuchssteiner, Wen-Xiu Ma
Abstract
An approach to master symmetries of lattice equations is proposed by the use of discrete zero curvature equation. Its key is to generate non-isospectral flows from the discrete spectral problem associated with a given lattice equation. A Volterra-type lattice hierarchy and the Toda lattice hierarchy are analyzed as two illustrative examples.
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