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has been cited by the following article:

• TITLE: Exponential Dichotomies and Fredholm Operators of Dynamic Equations on Time Scales

  AUTHORS: Le Huy Tien, Le Duc Nhien

  KEYWORDS: Exponential Dichotomy, Fredholm Operator, Time Scales, Linear Dynamic Equation

  JOURNAL NAME: Applied Mathematics, Vol.10 No.1, January 31, 2019

  ABSTRACT: For time-varying non-regressive linear dynamic equations on a time scale with bounded graininess, we introduce the concept of the associative operator with linear systems on time scales. The purpose of this research is the characterizations of the exponential dichotomy obtained in terms of Fredholm property of that associative operator. Particularly, we use Perron’s method, which was generalized on time scales by J. Zhang, M. Fan, H. Zhu in[1], to show that if the associative operator is semi-Fredholm then the corresponding linear nonautonomous equation has an exponential dichotomy on bothT+andT-.Moreover, we also give the converse result that the linear systems havean exponential dichotomy on bothT+andT-then the associative operator is Fredholm onT.