New Results on Linearization of Differential Equations with Piecewise Constant Argument

In this work, we give a version of Grobman–Hartman theorem for the nonautonomous differential equations with piecewise constant argument of generalized type when the nonlinear term is unbounded and its linear system partially satisfies α\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\alpha $$\end{document}-exponential dichotomy. More specifically, we divide the linear system into three subsystems, one of the subsystems is not necessary to admit α\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\alpha $$\end{document}-exponential dichotomy. It was assumed that the whole linear system admits exponential dichotomy in Pinto and Robledo (Z Anal Anwend 37:101–126, 2018), Zou and Shi (J Appl Anal Comput 7(1):309–333, 2017) and Zou et al. (Qual Theory Dyn Syst 18:495–531, 2019). Thus, we extend and improve the previous results in the literature. Moreover, we prove that the conjugated function H(t, x) is also ω\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\omega $$\end{document}-periodic when the systems are ω\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\omega $$\end{document}-periodic.