Bäcklund transformations for integrable lattice equations
نویسنده
چکیده
We give new Bäcklund transformations (BTs) for some known integrable (in the sense of being multidimensionally consistent) quadrilateral lattice equations. As opposed to the natural auto-BT inherent in every such equation, these BTs are of two other kinds. Specifically, it is found that some equations admit additional autoBTs (with Bäcklund parameter), whilst some pairs of apparently distinct equations admit a BT which connects them.
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