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Abstract
By using a comparison method and some difference inequalities we show that the following higher order difference equation
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1 Mathematical Institute of the Serbian Academy of Sciences, Beograd, Serbia (GRID:grid.419269.1) (ISNI:0000 0001 2146 2771); China Medical University, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan, Republic of China (GRID:grid.254145.3) (ISNI:0000 0001 0083 6092)
2 Taif University, Mathematics Department, Faculty of Science, Taif, Saudi Arabia (GRID:grid.412895.3) (ISNI:0000 0004 0419 5255)
3 University of Belgrade, Faculty of Electrical Engineering, Beograd, Serbia (GRID:grid.7149.b) (ISNI:0000 0001 2166 9385); University of Kragujevac, Faculty of Mechanical and Civil Engineering in Kraljevo, Kraljevo, Serbia (GRID:grid.413004.2) (ISNI:0000 0000 8615 0106)
4 Appalachian State University, Deptartment of Mathematical Sciences, Boone, USA (GRID:grid.252323.7) (ISNI:0000 0001 2179 3802)