On positiveness of the fundamental solution of a difference equation |
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Authors: | V. V. Malygina |
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Affiliation: | 1. Perm National Research Polytechnic University, Komsomol’skii pr. 29, Perm, 614990, Russia
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Abstract: | We obtain sharp and effective conditions of positiveness of the fundamental solution for linear scalar difference equations. Two approaches are realized, namely, an analytic one (in terms of properties of the characteristic equation) and a geometric one (in terms of a domain in the parameter space of the problem). |
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