existentially closed造句

例句与造句

1. Similarly in the class of ordered fields, the existentially closed structures are the real closed fields.
2. The existential F-closure in ( 16b ) refers to the operation of replacing the highest F-marked node with an existentially closed variable.
3. More generally, a structure " M " is called existentially closed in a class " K " of structures ( in which it is contained as a member ) if " M " is existentially closed in every superstructure " N " that is itself a member of " K ".
4. More generally, a structure " M " is called existentially closed in a class " K " of structures ( in which it is contained as a member ) if " M " is existentially closed in every superstructure " N " that is itself a member of " K ".
5. It's difficult to find existentially closed in a sentence. 用existentially closed造句挺难的