35XX 


Partial differential equations 

35Fxx 

General firstorder equations and systems 


35F05 
Linear firstorder equations 


35F10 
Initial value problems for linear firstorder equations 


35F15 
Boundary value problems for linear firstorder equations 


35F16 
Initialboundary value problems for linear firstorder equations 


35F20 
Nonlinear firstorder equations 


35F21 
HamiltonJacobi equations 


35F25 
Initial value problems for nonlinear firstorder equations 


35F30 
Boundary value problems for nonlinear firstorder equations 


35F31 
Initialboundary value problems for nonlinear firstorder equations 


35F35 
Linear firstorder systems 


35F40 
Initial value problems for linear firstorder systems 


35F45 
Boundary value problems for linear firstorder systems 


35F46 
Initialboundary value problems for linear firstorder systems 


35F50 
Nonlinear firstorder systems 


35F55 
Initial value problems for nonlinear firstorder systems 


35F60 
Boundary value problems for nonlinear firstorder systems 


35F61 
Initialboundary value problems for nonlinear firstorder systems 


35F99 
None of the above, but in this section 