The elliptic differential equations of second order ∑i,j=1 n Di[Aij(x,y)Djy]+P(x,y)+Q(x,y,△y)=e(x),x∈Ω will be considered in an exterior domain Ω包含于R^n，n≥2。Some oscillation criteria are given by integral av...The elliptic differential equations of second order ∑i,j=1 n Di[Aij(x,y)Djy]+P(x,y)+Q(x,y,△y)=e(x),x∈Ω will be considered in an exterior domain Ω包含于R^n，n≥2。Some oscillation criteria are given by integral averaging technique.展开更多
文摘The elliptic differential equations of second order ∑i,j=1 n Di[Aij(x,y)Djy]+P(x,y)+Q(x,y,△y)=e(x),x∈Ω will be considered in an exterior domain Ω包含于R^n，n≥2。Some oscillation criteria are given by integral averaging technique.
