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Khawnpéng tih hi khawnkhâwm, khawnkhâwm dang chhunga awm lehchhawng sawi nan kan hmang.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Venn_A_subset_B.svg/220px-Venn_A_subset_B.svg.png)
Chhiarkawp hrilhfiahna
editA hi khawnkhâwm ni se, B hi khawnkhâwm lo ni ve bawk ta se. A chhungkhung apiang B chhungkhung a nih vè zël chuan A hi B khawnpéng kan ti. A chhinchhiahnain "A B" tiin kan ziak.
Entirna
edit- lo ni sé, lo ni bawk ta se, A hi B khawnpéng a ni. A B tiin kan ziak.
- lo ni se, lo ni bawk se, A hi B khawnpéng a ni.
Chhinchhiahna
editKan sawi tawh angin A hi B khawnpéng a nih chuan "A B" tiin kan ziak a, "A hi B khawnpéng a ni" tia chhiar mai tùr. Heti zawng pawh hian a ziah theih: "B A". Hei hi "A hi B khawnpéng a ni" tia a chhiar theih tho rualin, a chhinchhiahna hawizawng milin "B-in A a dawlh" ti pawhin kan sawi bawk; A hi B chhunga a awm avangin a dawlh angin kan sawi a ni.
Thulâkna
edit- Halmos, Paul R., Naive Set Theory, Springer-Verlag, 1960