Term | Definition |
Ball/ Element | Na rudaí sa tacar/ The items in a set |
Tacar Nialasach ( Tacar folamh)/ Null set (Empty set) | Tacar gan aon bhall/ A set with no elements |
Tacair chothroma/ Even sets | Tá dhá thacar cothrom le chéile más iad na baill chéánna go baileach atá iontu/ Two sets are even sets if they contain the same elements |
Fo-thacair/ Subset | Má tá A= {1,2,3,4,5} agus B={3,4}, tá B ina fho-thacair de A |
Léaráid Venn/ Venn Diagram | Doigh le tacair a léiriú le ciorcal agus baill an tacar a léiriú le poncanna/ A way of representing sets using circles showing the elements of the sets with dots |
Idirmhír/ Intersection | Is é an idirmhír atá ag dhá thaciar ná na baill atá i bpairt ag an dá thacair/ The intersection of two sets is the elements which are part of both sets |
Bunuimhir/ Cardinal number | Líon ball an tacar/ Number of elements in a set |
Uilethacar/ Universal set | An tacar cúil nuair a bhíonn fo-thacair éagsúla á bplé/ The universal set is a set containing all possible elements in the context provided |
Comhlánú/ Complement ( A') | Na mball den uilethacar nach baill de an tacair atá i gceist/ The members of the universal set that are not included in the set in question |
Aontas idir dhá thacair/ Union of two sets | Gach ball de chuid A agus B le cheile/ The elements included in both A and B |