projective hierarchy造句

例句与造句

1. Thus the hyperarithmetic hierarchy is studied instead of the Borel hierarchy, and the analytical hierarchy instead of the projective hierarchy.
2. Thus the sets classified by the projective hierarchy are exactly the sets classified by the relativized version of the analytical hierarchy.
3. The axiom of determinacy implies that the Wadge hierarchy on any Polish space is well-founded and of length ?, with structure extending the projective hierarchy.
4. It begins with the study of pointclasses in the Borel hierarchy and extends to the study of more complex hierarchies such as the projective hierarchy and the Wadge hierarchy.
5. A similar relationship between the projective hierarchy and the relativized analytical hierarchy holds for subsets of Cantor space and, more generally, subsets of any effective Polish space.
6. It's difficult to find projective hierarchy in a sentence. 用projective hierarchy造句挺难的
7. More generally, the entire collection of sets of elements of a Polish space " X " can be grouped into equivalence classes, known as Wadge degrees, that generalize the projective hierarchy.
8. There is a close relationship between the relativized analytical hierarchy on subsets of Baire space ( denoted by lightface letters \ Sigma and \ Pi ) and the projective hierarchy on subsets of Baire space ( denoted by boldface letters \ boldsymbol { \ Sigma } and \ boldsymbol { \ Pi } ).