Necessary conditions for the existence of positive solutions of second-order linear difference equations and sufficient conditions for the oscillation of solutions |
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| Authors: | R Koplatadze G Kvinikadze |
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| Institution: | 1. Javakhishvili Tbilisi State University, Tbilisi, Georgia
2. Razmadze Mathematical Institute, Tbilisi, Georgia
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| Abstract: | We consider the difference equation
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D2u(k) + ?l = 1m pl(k)u( tl(k) ) = 0, {\Delta^2}u(k) + \sum\limits_{l = 1}^m {{p_l}(k)u\left( {{\tau_l}(k)} \right) = 0}, |
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