二阶椭圆型微分方程
Second order elliptic differential equation
elliptic partial differential equations of second order
Elliptic differential equations of second order
elliptic partial differential equations of second
非散度型椭圆算子
Nondivergence type elliptic operator
非线性椭圆型微分方程
nonlinear elliptic differential equation
椭圆型微分算子
elliptic differential operator
变系数二阶线性微分方程
second order linear differential equation with var
二阶椭圆算子
second order elliptic operator
二阶线性椭圆组
linear elliptic system of second order
二阶线性微分方程
second order linear differential equation
second order differential equation
second order linear differential equations
second order linera differential equation
linear differential equation
second order linear equation
second-order linear differential equation
非线性二阶微分方程
nonlinear second order differential equation
三阶拟线性微分方程
third-order quasilinear differential equation
四阶拟线性椭圆方程
fourth order quasilinear elliptic equation
一阶线性椭圆型复方程
linear elliptic complex equation of first order
非散度型拟线性抛物型方程
non-divergence quasilinear parabolic equation
拟线性椭圆型方程
Quasilinear elliptic equations
quasi-linear elliptic equations
quasilinear elliptic equation
quasi-linear elliptic equation
quasi_linear elliptic equations
拟线性椭圆型方程组
Elliptic equation systems
quasi-linear elliptic systems
quasilinear elliptic system
线性微分算子
linear differential operator
自共轭线性微分算子
Self-conjugate linear differential operator
二阶拟线性波动方程
the second order quasi-linear wave qeuation