Journal
AIMS MATHEMATICS
Volume 8, Issue 10, Pages 24116-24131Publisher
AMER INST MATHEMATICAL SCIENCES-AIMS
DOI: 10.3934/math.20231229
Keywords
uniform boundedness; spectral decomposition; periodic forcing functions; linear difference equation; characteristic equation
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In this paper, criteria for the uniform boundedness of solutions to linear difference equations (LEs) with periodic forcing functions are provided. Firstly, a necessary and sufficient condition for the boundedness of the sequence {Ln} of a square matrix L is derived, leading to a criterion for the uniform boundedness of solutions to LEs. Secondly, a criterion for the uniform boundedness of solutions to LEs with periodic forcing functions is obtained by utilizing a certain representation of solutions. Additionally, the characteristic equation of a matrix under the commuting condition is presented in relation to LEs with delay.
In this paper we give criteria on the uniform boundedness of the solutions to linear difference equations (LEs) with periodic forcing functions. First, we give a necessary and sufficient condition that the sequence {Ln} of a square matrix L is bounded, from which a criterion on the uniform boundedness of the solutions to LEs is obtained. Second, a criterion on the uniform boundedness of the solutions for LEs with periodic forcing functions is given by applying a certain representation of solutions. In connection with LEs with delay, we give the characteristic equation of a matrix under the commuting condition.
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