Abstract:
We introduce a new class of integrable two-dimensional mappings and chains. We explain how to construct hierarchies of (1+2) integrable systems that are invariant under such discrete transformations. We obtain explicit expressions for soliton-type solutions in terms of the matrix elements of fundamental representations of semisimple algebras.
A. N. Leznov, “Graded Lie algebras, representation theory, integrable mappings, and integrable systems”, Theoret. and Math. Phys., 122:2 (2000), 211–228