| He has spent enumerable hours in design and redesign and at the machines in his shop producing a rifle that promises greatness. |
| Then A2 is a complete computably enumerable subset of true second-order arithmetic. |
| In modern terminology we say that the set of valid formulas of first-order logic is recursively enumerable. |
| All enumerable sets are equivalent to each other, but not to any finite set. |
| They are enumerable but naming a few of them as a sample of them seems timely. |
| And though the examples of such vicissitudes are beyond number, nevertheless I will only enumerable a few in a cursory manner. |
