35XX 


Partial differential equations 

35Axx 

General theory 


35A05 
General existence and uniqueness theorems 


35A07 
Local existence and uniqueness theorems [See also 35Hxx, 35Sxx] 


35A08 
Fundamental solutions 


35A10 
CauchyKovalevskaya theorems 


35A15 
Variational methods 


35A17 
Parametrices 


35A18 
Wave front sets 


35A20 
Analytic methods, singularities 


35A21 
Propagation of singularities 


35A22 
Transform methods (e.g. integral transforms) 


35A25 
Other special methods 


35A27 
Microlocal methods; methods of sheaf theory and homological algebra in PDE [See also 32C38, 58J15] 


35A30 
Geometric theory, characteristics, transformations [See also 58J70, 58J72] 


35A35 
Theoretical approximation to solutions {For numerical analysis, see 65Mxx, 65Nxx} 


35A99 
None of the above, but in this section 