6 ideas
| 21548 | The null class is the class with all the non-existents as its members [MacColl, by Lackey] |
| 18085 | Values that approach zero, becoming less than any quantity, are 'infinitesimals' [Cauchy] |
| 18084 | When successive variable values approach a fixed value, that is its 'limit' [Cauchy] |
| 8386 | Events are picked out by descriptions, and facts by whole sentences [Crane] |
| 8387 | A cause has its effects in virtue of its properties [Crane] |
| 8384 | The regularity theory explains a causal event by other items than the two that are involved [Crane] |