SOME PROPERTIES OF COMBINATION OF SOLUTIONS TO SECOND-ORDER LINEAR DIFFERENTIAL EQUATIONS WITH ANALYTIC COEFFICIENTS OF [P;Q]-ORDER IN THE UNIT DISC

Abstract
In this paper, we consider some properties on the growth and oscillation of combination of solutions of the linear differential equation \[f'' + A(z) f' + B (z) f = 0\] with analytic coefficients A(z) and B (z) with [p; q]-order in the unit disc $\Delta = \{z \in \mathbb{C} : |z| < 1\}$.