| The universal Turing machine is a hypothetical device that scans a digital tape and, in principle, can solve any computable problem. |
| In particular, composite fields are naturally computable using the intersection of regions in the separate fields. |
| Atom depth is an easily computable quantity, yet it allows one to detect some general features of proteins and protein domains. |
| The CF also has the interesting feature of being computable at any level of disaggregation. |
| This paper surveys dynamic computable general equilibrium analyses of tax distortions, focussing on the issue of tax ranking. |
| A computable general equilibrium model was developed and was used to address various questions pertaining to population aging. |
