Abstract:
We study the structure of solutions of the Lax equation Dt(G)=[F,G]Dt(G)=[F,G] for formal series in powers of the shift operator. We show that if an equation with a given series FF of degree mm admits a solution GG of degree kk, then it also admits a solution HH of degree mm such that Hk=GmHk=Gm. We use this property to derive necessary integrability conditions for scalar evolutionary lattices.
This publication is cited in the following 10 articles:
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