“…Therefore, equation 1.1 particularly generalizes the problems involving variable exponent. This kind of equations have been intensively studied by many authors for the past two decades due to its significant role in many fields of mathematics, such as in the study of calculus of variations, partial differential equations [2,17,18], but also for their use in a variety of physical and engineering contexts: the modeling of electrorheological fluids [32], the analysis of Non-Newtonian fluids [36], fluid flow in porous media [3], magnetostatics [14], image restoration [11], and capillarity phenomena [8], see also, e.g., [4,5,6,7,9,12,13,16,23,35] and references therein. Therefore, equation (1.1) may represent a variety of mathematical models corresponding to certain phenomena:…”