Asymptotically almost periodic solutions of limit periodic difference systems with coefficients from commutative groups

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Authors

HASIL Petr VESELÝ Michal

Year of publication 2019
Type Article in Periodical
Magazine / Source Topological Methods in Nonlinear Analysis
MU Faculty or unit

Faculty of Science

Citation
Web Abstract
Doi http://dx.doi.org/10.12775/TMNA.2019.051
Keywords limit periodicity; almost periodicity; limit periodic sequences; asymptotically almost periodic solutions; difference equations
Description We study the behaviour of solutions of limit periodic difference systems over (infinite) fields with absolute values. The considered systems are described by the coefficient matrices that belong to commutative groups whose boundedness is not required. In particular, we are interested in special systems with solutions which vanish at infinity or which are not asymptotically almost periodic. We obtain a transparent condition on the matrix groups which ensures that the special systems form a dense subset in the space of all considered systems, i.e., that, in any neighbourhood of any considered limit periodic system, there exists a system which have non-asymptotically almost periodic or vanishing solutions. The presented results improve and extend known ones.
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