Basin of Attraction through Invariant Curves and Dominant Functions
We study a second-order difference equation of the form z<inf>n+1</inf> = z<inf>n</inf> F (z<inf>n-1</inf>) + h, where both F (z) and z F (z) are decreasing. We consider a set of invariant curves at h = 1 and use it to characterize the behaviour of solutions when...
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2015
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| Online Access: | http://hdl.handle.net/20.500.12458/33 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84935863343&doi=10.1155%2f2015%2f160672&partnerID=40&md5=bad8e926eda0eac68463f6ca1d11565c |
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| Summary: | We study a second-order difference equation of the form z<inf>n+1</inf> = z<inf>n</inf> F (z<inf>n-1</inf>) + h, where both F (z) and z F (z) are decreasing. We consider a set of invariant curves at h = 1 and use it to characterize the behaviour of solutions when h > 1 and when 0 < h < 1. The case h > 1 is related to the Y2K problem. For 0 < h < 1, we study the stability of the equilibrium solutions and find an invariant region where solutions are attracted to the stable equilibrium. In particular, for certain range of the parameters, a subset of the basin of attraction of the stable equilibrium is achieved by bounding positive solutions using the iteration of dominant functions with attracting equilibria. © 2015 Ziyad AlSharawi et al. |
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