On two non-local boundary value problem for the Lavrent’ev-Bitsadze equation. (Russian) Zbl 0449.35016
MSC:
35G05 | Linear higher-order PDEs |
35Q99 | Partial differential equations of mathematical physics and other areas of application |
35G05 | Linear higher-order PDEs |
35Q99 | Partial differential equations of mathematical physics and other areas of application |