34XX 


Ordinary differential equations 

34Axx 

General theory 


34A05 
Explicit solutions and reductions 


34A09 
Implicit equations, differentialalgebraic equations [See also 65L80] 


34A12 
Initial value problems, existence, uniqueness, continuous dependence and continuation of solutions 


34A25 
Analytical theory: series, transformations, transforms, operational calculus, etc. [See also 44XX] 


34A26 
Geometric methods in differential equations 


34A30 
Linear equations and systems, general 


34A34 
Nonlinear equations and systems, general 


34A35 
Differential equations of infinite order 


34A36 
Discontinuous equations 


34A37 
Differential equations with impulses 


34A40 
Differential inequalities [See also 26D20] 


34A45 
Theoretical approximation of solutions {For numerical analysis, see 65Lxx} 


34A55 
Inverse problems 


34A60 
Differential inclusions [See also 49J24, 49K24] 


34A99 
None of the above, but in this section 