View source for Qaybta (xisaab)

'''Qaybtu''' ({{lang-en|Set}}) waa fikrad ka timid [[xisaab]]ta.  Qaybtu waxay leedahay xubno (sidoo kale loo yaqaan canaasirta).  Qaybta waxaa lagu qeexay xubnaheeda, markaa labada qaybood ee isku mid ah waa isku mid (tusaale, haddii <math>\mathit{X}</math> iyo <math>\mathit{Y}</math> xubno isku mid ah yeeshaan, markaas ''<math>\mathit{X} = \mathit{Y}</math>'').

=Hordhac=
===Sifooyinka qayb===
*Jiritaanka shayga xubin ka ah qayb;
*Jiritaanka tiro walxood (cutubyo) oo samaysmaya qayb;
*Waxaa jira walxo aan xubin ka ahayn qayb.
===Astaanta qayb===
Qaybta ayaa lagu qoray calaamadda (''' { ''') ama (''' } '''). 

Guud ahaan, qaybta waxaa lagu magacaabaa iyadoo la isticmaalayo xaraf weyn.
===Tusaale===
Qayb X wuxuu ka kooban yahay tiro ka yar 10, ka dibna qor:</br>
{{big|<nowiki>{x|tiro ka yar 10}</nowiki>}}</br>
{{small|oo macnaheedu yahay}}</br>
{{big|<nowiki>{x|1, 2, 3, 4, 5, 6, 7, 8, 9}</nowiki>}}

=Ogaysiis=
Inta badan xisaabyahanadu waxay adeegsadaan xarfo ''ITALIC'' ah oo far waaweyn ah si ay wax uga qoraan qaybaha (sida <math>A</math>, <math>B</math>, <math>C</math>).  Waxyaalaha loo arko inay yihiin qaybo ka mid ah waxa sida caadiga ah lagu qoraa xarfo yaryar oo [[Roomaan]] ah.<ref>[https://mathvault.ca/hub/higher-math/math-symbols/set-theory-symbols/ ''mathvault.ca'']</ref><ref>[https://www.mathsisfun.com/sets/sets-introduction.html ''mathsisfun.com'']</ref>
===Muujinaya qayb===
*<math>X = \{1, 2, 3\}</math> waxa loo qayb oo ka kooban 1, 2, iyo 3.
Si kale, oo loo yaqaan qoraal-dhisaha,<ref>[https://mathworld.wolfram.com/Set.html ''Set'']</ref> waa bayaan ku saabsan waxa dhabta ah ee xubnaha qayb, sida tan:
*{x|x waa tiro dabiici ah & x < 4}.

Marka shayga ''a'' yahay xubinta qaybta <math>A</math> waxa loo qoraa sidan:
*a ∈ A.

=Jaantusyada Venn=
::''Sidoo kale eeg: [[Jaantusyada Venn]]''
[[File:Venn0001.svg|thumb|150px|Isgoyska <math>A \cap B</math>]]
Si aad u muujiso hawlgallada jaantusyada xisaabyahannada isticmaal jaantusyada Venn.  Jaantusyada Venn waxay isticmaalaan goobo si ay u muujiyaan qaybo gaar ah.  Caalamka waxa lagu sawiray leydi.  Natiijooyinka hawlgallada waxaa lagu muujiyay meelo midab leh.  Sawirka hawlgalka isgoysyada goobada bidix waxay muujinaysaa qaybo <math>A</math> iyo goobada saxda ahi waxay tusinaysaa qaybo <math>B</math>.

=Qaybaha gaarka ah=
{{sect-stub}}

=Tixraac=
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{{general-stub}}[[Category:Xisaab]]