- 
                            
                            
                                                            
                            
                                                                    35J05                                                            
                            Laplacian operator, reduced wave equation (Helmholtz equation), Poisson equation [See also  
31Axx,  
31Bxx]
 
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J08                                                            
                            Green's functions
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J10                                                            
                            Schrödinger operator [See also  
35Pxx]
 
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J15                                                            
                            Second-order elliptic equations
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J20                                                            
                            Variational methods for second-order elliptic equations
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J25                                                            
                            Boundary value problems for second-order elliptic equations
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J30                                                            
                            Higher-order elliptic equations [See also  
31A30,  
31B30]
 
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J35                                                            
                            Variational methods for higher-order elliptic equations
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J40                                                            
                            Boundary value problems for higher-order elliptic equations
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J45                                                            
                            General theory of elliptic systems of PDE
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J46                                                            
                            First-order elliptic systems
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J47                                                            
                            Second-order elliptic systems
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J48                                                            
                            Higher-order elliptic systems
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J50                                                            
                            Variational methods for elliptic systems
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J55                                                            
                            Boundary value problems for elliptic systems
                         
                                                - 
                            
                                                            
                            
                                                            
                            
                                                                    35J56                                                            
                            Boundary value problems for first-order elliptic systems
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J57                                                            
                            Boundary value problems for second-order elliptic systems
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J58                                                            
                            Boundary value problems for higher-order elliptic systems
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J60                                                            
                            Nonlinear elliptic equations
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J61                                                            
                            Semilinear elliptic equations
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J62                                                            
                            Quasilinear elliptic equations
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J65                                                            
                            Nonlinear boundary value problems for linear elliptic equations
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J66                                                            
                            Nonlinear boundary value problems for nonlinear elliptic equations
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J67                                                            
                            Boundary values of solutions to elliptic equations
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J70                                                            
                            Degenerate elliptic equations
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J75                                                            
                            Singular elliptic equations
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J85                                                            
                            Unilateral problems and variational inequalities for elliptic PDE 
[See also 35R35, 49J40] 
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J86                                                            
                            Linear elliptic unilateral problems and linear elliptic variational inequalities [See also  
35R35,  
49J40]
 
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J87                                                            
                            Nonlinear elliptic unilateral problems and nonlinear elliptic variational inequalities [See also  
35R35,  
49J40]
 
                         
                                                - 
                            
                                                            
                            
                                                            
                            
                                                                    35J88                                                            
                            Systems of elliptic variational inequalities [See also  
35R35,  
49J40]
 
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J91                                                            
                            Semilinear elliptic equations with Laplacian, bi-Laplacian or poly-Laplacian
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J92                                                            
                            Quasilinear elliptic equations with $p$-Laplacian
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J93                                                            
                            Quasilinear elliptic equations with mean curvature operator
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J96                                                            
                            Elliptic Monge-Ampère equations
                         
                                                - 
                            
                            
                                                            
                            
                                                                    35J99                                                            
                            None of the above, but in this section