例句與造句

1. Her research concerned mathematical logic and algebra, and in particular the theory of differentially closed fields.
2. Like the theory of algebraically closed fields, the theory DCF 0 of differentially closed fields of characteristic 0 eliminates quantifiers.
3. Taking " g " = 1 and " f " any ordinary separable polynomial shows that any differentially closed field is separably closed.
4. In characteristic 0 this implies that it is algebraically closed, but in characteristic " p " > 0 differentially closed fields are never algebraically closed.
5. The number of differentially closed fields of some infinite cardinality ? is 2 ?; for ? uncountable this was proved by, and for ? countable by Hrushovski and Sokolovic.
6. It's difficult to find differentially closed field in a sentence. 用differentially closed field造句挺難的