| 单词 | aleph-zero |
| 释义 | > as lemmasaleph-zero aleph-zero n. Mathematics = aleph null n. ΚΠ 1899 [see sense 2]. 1954 Jrnl. Symbolic Logic 19 257 It is no longer possible to prove the existence of any cardinal number greater than aleph-zero (the number of positive integers) in ∑ω. 2002 J. A. Benardete in D. Jacquette Compan. Philos. Logic xxiii. 352 Let all of space time be packed solid with dogs cheek by jowl: that will yield no more than aleph-zero of them. < as lemmas |
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