| 单词 | aleph-null |
| 释义 | aleph-null[ ah-lif-nuhl ] / ˈɑ lɪfˈnʌl / noun Mathematics.the cardinal number of the set of all positive integers; the smallest transfinite cardinal number. Also called a·leph-ze·ro [ah-lif-zeer-oh]. /ˈɑ lɪfˈzɪər oʊ/. Origin of aleph-nullFirst recorded in 1905–10 Words nearby aleph-nullalendronate sodium, Alene, leopard cannot change its spots, a, aleph, aleph-bet, aleph-null, Aleppo, Aleppo boil, Aleppo gall, Aleppo pine, alerce Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for aleph-nullaleph-null aleph-zeronounthe smallest infinite cardinal number; the cardinal number of the set of positive integersSymbol: א 0 Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for aleph-nullaleph-null [ ä′lĕf-nŭl′ ] The first of the transfinite cardinal numbers, corresponding to the number of elements in the set of positive integers. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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