Discrete and Continuous Linearizable Equations

Details Discrete and Continuous Linearizable Equations Discrete and Continuous Linearizable Equations

1998-12-21

arxiv.org/abs/solv-int/9812024v1

Physica A, 268, 129-141 (1999)

Nonlinear Sciences

Exactly Solvable and Integrable Systems

Plain Tex file, 14 pages, no figure

Scientific paper

We study the projective systems in both continuous and discrete settings. These systems are linearizable by construction and thus, obviously, integrable. We show that in the continuous case it is possible to eliminate all variables but one and reduce the system to a single differential equation. This equation is of the form of those singled-out by Painlev\'e in his quest for integrable forms. In the discrete case, we extend previous results of ours showing that, again by elimination of variables, the general projective system can be written as a mapping for a single variable. We show that this mapping is a member of the family of multilinear systems (which is not integrable in general). The continuous limit of multilinear mappings is also discussed.

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