| Article ID: | iaor19931113 | 
| Country: | Netherlands | 
| Volume: | 39 | 
| Issue: | 2 | 
| Start Page Number: | 125 | 
| End Page Number: | 136 | 
| Publication Date: | Oct 1992 | 
| Journal: | Discrete Applied Mathematics | 
| Authors: | Ishii Shinichirou | 
| Keywords: | cellular automata | 
Each measurable transformation that commutes with a shift on the set of configurations is proved to have an interesting dynamical property, i.e., for almost all initial configurations their orbits have a common structure. Those transformations can be put into four classes according to their dynamical properties. The classification of cellular automata is derived from it.