35XX 


Partial differential equations 

35Sxx 

Pseudodifferential operators and other generalizations of partial differential operators [See also 47G30, 58J40] 


35S05 
Pseudodifferential operators 


35S10 
Initial value problems for pseudodifferential operators 


35S11 
Initialboundary value problems for pseudodifferential operators 


35S15 
Boundary value problems for pseudodifferential operators 


35S30 
Fourier integral operators 


35S35 
Topological aspects: intersection cohomology, stratified sets, etc. [See also 32C38, 32S40, 32S60, 58J15] 


35S50 
Paradifferential operators 


35S99 
None of the above, but in this section 