Cuardaigh téarma Béarla nó Gaeilge
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Matamaitic » Loighic & Tacartheoiric Is fo-thacar den tacar B é an tacar A más gá agus más leor gur ball de B é gach ball de A.
Mathematics » Logic & Set Theory A set A is a subset of the set B if and only if every element of A is an element of B