- 類 (數學)
- class: n. 1.階級;社會等級。 2.學級；班級，年級，級，班 ...
- set theory: 【數學】集(合)論。
- theory of class: 類型論
- set class: 集合等級
- a review on the theory of middle class: 關于中產階級的理論回顧
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class (set theory)中文什么意思
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- 類 (數學)
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百科釋義
In set theory and its applications throughout mathematics, a class is a collection of sets (or sometimes other mathematical objects) which can be unambiguously defined by a property that all its members share. The precise definition of "class" depends on foundational context.
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