“…For example, aimed at the numerical research of ordinary differential equations with distributed delay, many significant advances have been made, such as collocation methods, Runge-Kutta methods, linear multistep methods, one-leg methods, spectral methods and block boundary value methods (see e.g., [2,4,[22][23][24]30]). For solving numerically partial differential equations with distributed delay, He et al [8] studied one-dimensional semi-linear parabolic problems by using the linearized compact scheme. Subsequently, Qin et al [13] further applied the linearized compact scheme to solve two and three-dimensional semi-linear parabolic problems with distributed delay.…”