Natuurlike getal: Verskil tussen weergawes

'''Natuurlike getalle''' is 'n versameling van [[Getal|getalle]] in [[wiskunde]] wat vir tel ("daar is 3 mense in die motor") en rangskikking ("die 3de stel hakies") gebruik word. Sommige bronne definieer die natuurlike getalle as die versameling van '''nie-negatiewe heelgetalle''' {{math|1=0, 1, 2, 3, …}},<ref name = ISO80000 >{{cite book|title=ISO 80000-2:2009|chapter-url=http://www.iso.org/iso/catalogue_detail?csnumber=31887|publisher=[[International Organization for Standardization]]| chapter = Standard number sets and intervals | page = 6 }}</ref><ref name="Mac Lane & Birkhoff 1999 p15">{{harvtxt|Mac Lane|Birkhoff|1999}} include zero in the natural numbers: 'Intuitively, the set {{math|ℕ {{=}} {{mset|0, 1, 2, ...}}}} of all ''natural numbers'' may be described as follows: {{math|ℕ}} contains an "initial" number 0; ...'. They follow that with their version of the Peano Postulates. (p. 15)</ref> terwyl ander bronne dit as die versameling van '''positiewe heelgetalle''' {{math|1={{num|1}}, {{num|2}}, {{num|3}}, …}} definieer.<ref>{{Citation