Nonlinear Sciences – Exactly Solvable and Integrable Systems
Scientific paper
2010-05-13
Int'l J Pure and Appl Math, 62, 2010, 233-245
Nonlinear Sciences
Exactly Solvable and Integrable Systems
The general theory of semiconjugate factorization of non-autonomous higher order difference equations, 16 pages
Scientific paper
The existence of a semiconjugate relation permits the transformation of a higher order difference equation on a group into an equivalent triangular system of two difference equations of lower orders. Introducing time-dependent form symmetries in this paper enables us to identify the semiconjugate property in a larger set of non-autonomous difference equations than previously considered. We show that there is a substantial class of equations having this feature that includes the general (non-autonomous, non-homogeneous) linear equation with variable coefficients in an arbitrary algebraic field.
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