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aleph-zero

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a⋅leph-null

[ah-lif-nuhl]
–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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a·leph-null   (ä'lěf-nŭl', -ləf-)   
n.  The first of the transfinite cardinal numbers. It corresponds to the number of elements in the set of positive integers. Also called aleph-zero.
a·leph-ze·ro   (ä'lěf-zîr'ō, -zē'rō, -ləf-)   
n.  See aleph-null.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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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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