345 (عدد): الفرق بين النسختين

'''345''' ('''ثلاثمائة وخمسة وأربعون ''') هو [[عدد صحيح]] <ref>{{MathWorld|title=Natural Number|id=NaturalNumber}}</ref><ref>{{Citation| مسار = http://www.merriam-webster.com/dictionary/natural%20number| عنوان = natural number| عمل = Merriam-Webster.com| ناشر = [[ميريام وبستر]]| تاريخ الوصول = 4 October 2014| مسار الأرشيفأرشيف = https://web.archive.org/web/20210115182448/https://www.merriam-webster.com/dictionary/natural%20number | تاريخ الأرشيفأرشيف = 15 يناير 2021 }}</ref><ref>{{harvtxt|Carothers|2000}} says: "ℕ is the set of natural numbers (positive integers)" (p. 3)</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> يلي العدد [[344 (عدد)|344]] ويسبق العدد [[346 (عدد)|346]] وهو [[عدد طبيعي]] [[أعداد سالبة وموجبة|موجب]].