Expansion in eigenfunctions for some functional-differential operators. (Russian. English summary) Zbl 1282.34090
MSC:
| 34L10 | Eigenfunctions, eigenfunction expansions, completeness of eigenfunctions of ordinary differential operators |
| 47G20 | Integro-differential operators |
| 34K99 | Functional-differential equations (including equations with delayed, advanced or state-dependent argument) |
