hierarchy of set造句

Your hierarchy of sets and subsets seems off.
One motivation for the ZFC axioms is the cumulative hierarchy of sets introduced by John von Neumann.
Of these, ZF, NBG, and MK are similar in describing a cumulative hierarchy of sets.
Post's theorem establishes a relationship between the Turing jump operator and the arithmetical hierarchy of sets of natural numbers.
Here V _ { \ alpha _ 1 } denotes the set indexed by the ordinal " ? " 1 in the von Neumann hierarchy of sets.
It's difficult to find hierarchy of set in a sentence. 用hierarchy of set造句挺难的

In 1914, Norbert Wiener showed how to code the ordered pair as a set of sets, making it possible to eliminate relation types in favor of the linear hierarchy of sets described here.