| 单词 | zorn's lemma |
| 释义 | Zorn's lemma in American English (zɔrnz) noun Math a theorem of set theory that if every totally ordered subset of a nonempty partially ordered set has an upper bound, then there is an element in the set such that the set contains no element greater than the specified given element Word origin [1945–50; after Max August Zorn (1906–93), German mathematician] |
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