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Classification of linear time-varying difference equations under kinematic similarity. (English) Zbl 0860.39008

This paper concerns the problem of classifying linear time-varying finite dimensional systems of difference equations under kinematic similarity, i.e., under a uniformly bounded time-varying change of variables of which the inverse is also uniformly bounded. Also the problem of reducing difference equations by using such similarity transformations is studied. Both problems are solved for a number of subclasses, including equations with scalar coefficients, time-invariant equations, finitely supported equations, and equations with one jump. For the general case an open problem is formulated.

MSC:

39A10 Additive difference equations
47B37 Linear operators on special spaces (weighted shifts, operators on sequence spaces, etc.)
Full Text: DOI

References:

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