Existence of periodic travelling waves in Fermi-Pasta-Ulam system on 2D-lattice. (Ukrainian. English summary) Zbl 1308.34020
MSC:
| 34A33 | Ordinary lattice differential equations |
| 34C25 | Periodic solutions to ordinary differential equations |
| 82C20 | Dynamic lattice systems (kinetic Ising, etc.) and systems on graphs in time-dependent statistical mechanics |
