Linear differential equations with entire coefficients of -order in the complex plane

In this paper, we firstly investigate the complex high order linear differential equations in which the coefficients are entire functions of [ p , q ] -order and obtain some results which improve and generalize some previous results in Cao (2009) [3], Chen and Yang (2000) [4], Heittokangas et al. (2006) [12], Kinnunen (1998) [17], Tu and Yi (2008) [20].