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alephnull

 - 2 dictionary results

a⋅leph-null

  [ah-lif-nuhl]
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–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] .

Origin:
1905–10
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Science Dictionary
aleph-null   (ä'lěf-nŭl')  Pronunciation Key 
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 © 2002. Published by Houghton Mifflin. All rights reserved.
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