settheoretic definition of natural numbers (Q2995274)
definition of natural numbers using set theory;proposed to construct the natural numbers using set theory (representation of via von Neumann ordinalsin axiomatic set theory;a system based on equinumerosity that was proposed by Frege and by Russell)
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English 
settheoretic definition of natural numbers

definition of natural numbers using set theory;proposed to construct the natural numbers using set theory (representation of via von Neumann ordinalsin axiomatic set theory;a system based on equinumerosity that was proposed by Frege and by Russell)

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Wikipedia(3 entries)
 enwiki Settheoretic definition of natural numbers
 frwiki Construction des entiers naturels
 zhwiki 自然数的集合论定义