This work is concernedwith a class of fourth order semilinear ordinary differential equation with pseudo almost periodic environment and multiple delays. Specifically, we establish the existence and uniqueness of the pseudo almost periodic solutions. Furthermore, we discuss the global stability of the considered equation.

where τ , e ∈ C(R,R) are T-periodic, and f , g ∈ C(R × R,R) are T-periodic in the first argument, T >  is a constant. In recent years, there are many results on the existence of periodic solutions for various types of delay differential equation with deviating arguments, especially for the Liénard equation and Rayleigh equation (see [–]). Now as the prescribed mean curvature ( x ′(t) √ +x′...

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Abstract This article constructs an understanding of the Brazilian middle classes using economic, sociological, and cultural factors. It argues that so-called new class is actually expanded vulnerable class, are simultaneously conscious in denial injustice toward lower classes. The argument based on accidental biographical ethnography: reinterpretation a field journal use one person to understa...