On a max-type and a min-type difference equation |
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| Authors: | E.M. Elsayed,Bratislav D. Iri
anin |
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| Affiliation: | aDepartment of Mathematics, Faculty of Science, Mansoura University, Mansoura 35516, Egypt;bFaculty of Electrical Engineering, Bulevar Kralja Aleksandra 73, 11000 Beograd, Serbia |
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| Abstract: | This note shows that every positive solution to the following third order non–autonomous max-type difference equationwhen  is a three-periodic sequence of positive numbers, is periodic with period three. The same result was proved for the following min-type difference equation |
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| Keywords: | Max-type difference equation Positive solution Period-three solution |
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