2 papers
math-ph2002
Exactly solvable periodic Darboux q-chains
Ivan A. Dynnikov, Sergey V. Smirnov
A difference q-analogue of the dressing chain is discussed in this paper.
math-ph2000
Discrete spectral symmetries of low-dimensional differential operators and difference operators on regular lattices and two-dimensional manifolds
S. P. Novikov, I. A. Dynnikov
Euler-Darboux-Backlund and Laplace transformations are considered for the one- and two-dimensional Schrodinger operators. Their discrete analogs are constructed and generalized for…