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The discrete Prüfer transformation. (English) Zbl 0980.39006

The authors introduce the Prüfer transformation for self-adjoint difference equations and use it to obtain oscillation criteria and other results. They offer an extension of this approach to the case of general symplectic systems on time scales.

MSC:

39A12 Discrete version of topics in analysis
34B24 Sturm-Liouville theory
34N05 Dynamic equations on time scales or measure chains
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