Asymptotic expansion of the state density and the spectral function of a Hill operator. (English) Zbl 0624.34018
Translation from Mat. Sb., Nov. Ser. 128(170), No.4(12), 474-491 (Russian) (1985; Zbl 0604.34015).
MSC:
| 34L99 | Ordinary differential operators |
| 34E05 | Asymptotic expansions of solutions to ordinary differential equations |
| 35J10 | Schrödinger operator, Schrödinger equation |
| 34B30 | Special ordinary differential equations (Mathieu, Hill, Bessel, etc.) |
| 70H99 | Hamiltonian and Lagrangian mechanics |
