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Periodic solutions to a difference equation with maximum
Authors:H. D. Voulov
Affiliation:Department of Mathematics, Southern Illinois University at Carbondale, Carbondale, Illinois 62901-4408
Abstract:An open problem posed by G. Ladas is to investigate the difference equation

begin{displaymath}x_n=maxleft{frac{A}{x_{n-1}},,frac{B}{x_{n-3}},,frac{C} {x_{n-5}}right},quad n=0,1,ldots,end{displaymath}

where $A, B, C$ are any nonnegative real numbers with $A+B+C > 0$. We prove that there exists a positive integer $T$ such that every positive solution of this equation is eventually periodic of period $T$.

Keywords:Periodic solutions   nonlinear difference equations
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