empty relation造句

例句与造句

1. In particular, note that in the case of an empty relation, every subset of the heading has the uniqueness property, including the empty set.
2. Empty relations do not cause any problem for first-order interpretations, because there is no similar notion of passing a relation symbol across a logical connective, enlarging its scope in the process.
3. A simple example of a PER that is " not " an equivalence relation is the empty relation R = \ emptyset ( unless X = \ emptyset, in which case the empty relation " is " an equivalence relation ( and is the only relation on X ) ).
4. A simple example of a PER that is " not " an equivalence relation is the empty relation R = \ emptyset ( unless X = \ emptyset, in which case the empty relation " is " an equivalence relation ( and is the only relation on X ) ).
5. It's difficult to find empty relation in a sentence. 用empty relation造句挺难的