| This duality structure, interesting by itsetf, is also instrumental in proving some of the ergodic results. |
| For the quadrant version, we prove the existence of temporally ergodic evolutions and of spatially ergodic ones. |
| His ergodic theorem gave the kinetic theory of gases a rigorous basis. |
| Doeblin also contributed to the theory of random chains with complete connection, some of which was used in a paper by him on ergodic properties of continued fractions. |
| In the more difficult half plane problem, the aim is to obtain evolutions which are both temporally and spatially ergodic. |
| Under appropriate assumptions on the boundary conditions and on the services, we obtain ergodic results for both versions of the model. |
