34Kxx | 34G | 34 | 34L |
| 34K05 | General theory |
| 34K06 | Linear functional-differential equations |
| 34K07 | Theoretical approximation of solutions |
| 34K10 | Boundary value problems |
| 34K11 | Oscillation theory |
| 34K12 | Growth, boundedness, comparison of solutions |
| 34K13 | Periodic solutions |
| 34K14 | Almost periodic solutions |
| 34K17 | Transformation and reduction of equations and systems, normal forms |
| 34K18 | Bifurcation theory |
| 34K19 | Invariant manifolds |
| 34K20 | Stability theory |
| 34K23 | Complex (chaotic) behavior of solutions |
| 34K25 | Asymptotic theory |
| 34K26 | Singular perturbations |
| 34K28 | Numerical approximation of solutions |
| 34K29 | Inverse problems |
| 34K30 | Equations in abstract spaces [See also 34Gxx, 47Dxx, 47Jxx] |
| 34K35 | Control problems [See also 49J25, 49K25, 93C15] |
| 34K40 | Neutral equations |
| 34K45 | Equations with impulses |
| 34K50 | Stochastic delay equations [See also 34F05, 60Hxx] |
| 34K60 | Applications |
| 34K99 | None of the above, but in this section |