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Líon torthaí a aimsíodh
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Matamaitic » Loighic & Tacartheoiric Is ionann aontas (nó suim) na dtacar A agus B agus tacar na mball sin a bhaineann le ceann ar a laghad den dá thacar. Is mar a chéile é do líon níos mó de thacair, fiú do líon éigríochta.
Mathematics » Logic & Set Theory The union (or sum) of the sets A and B is the set of those elements which belong to at least one of the sets. Similarly, for a greater (even infinite) number of sets.
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GAcomhlánú fir coibhneasta dhá thacar▼
gu comhlánaithe choibhneasta dhá thacar, ai comhlánuithe coibhneasta dhá thacar
Matamaitic » Loighic & Tacartheoiric Is ionann an difríocht (nó an comhlánú coibhneasta) idir na tacair A agus B agus tacar na mball sin de A nach bhfuil i B.
Mathematics » Logic & Set Theory The difference (or relative complement) of the sets A and B is the set of those elements of A which do not belong to B.
FÉACH FREISIN · SEE ALSO
# difríocht idir dhá thacar · difference of two sets#
Matamaitic » Loighic & Tacartheoiric Is ionann an difríocht (nó an comhlánú coibhneasta) idir na tacair A agus B agus tacar na mball sin de A nach bhfuil i B.
Mathematics » Logic & Set Theory The difference (or relative complement) of the sets A and B is the set of those elements of A which do not belong to B.
FÉACH FREISIN · SEE ALSO
# comhlánú coibhneasta dhá thacar · relative complement of two sets#
Matamaitic » Loighic & Tacartheoiric Is ionann idirmhír na dtacar A agus B agus tacar na mball a bhaineann go comhuaineach le A agus le B. [Is mar a chéile é do líon níos mó tacar (fiú do líon éigríochta).]
Mathematics » Logic & Set Theory The intersection (or product) of the sets A and B is the set of elements belonging simultaneously to both A and B. [Similarly, for a greater (even infinite) number of sets.]
FÉACH FREISIN · SEE ALSO
# iolrach dhá thacar · product of two sets#
Matamaitic » Loighic & Tacartheoiric Is ionann idirmhír na dtacar A agus B agus tacar na mball a bhaineann go comhuaineach le A agus le B. [Is mar a chéile é do líon níos mó tacar (fiú do líon éigríochta).]
Mathematics » Logic & Set Theory The intersection (or product) of the sets A and B is the set of elements belonging simultaneously to both A and B. [Similarly, for a greater (even infinite) number of sets.]
FÉACH FREISIN · SEE ALSO
# idirmhír dhá thacar · intersection of two sets#
(of repetitions)
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Matamaitic » Loighic & Tacartheoiric Deirtear go bhfuil dhá thacar comhionann más gá agus más leor gach ball de gach aon tacar a bheith ina bhall den tacar eile. Nuair atá A agus B comhionann, scríobhtar A = B.
Mathematics » Logic & Set Theory Two sets are said to be identical if and only if every element of each is an element of the other. When A and B are identical, we write A = B.
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Matamaitic » Loighic & Tacartheoiric Bíonn dhá thacar (nó breis) scartha mura mbíonn aon bhall coiteann iontu. Is comhionann a n-idirmhír agus an tacar neamhnitheach nó folamh.
Mathematics » Logic & Set Theory Two (or more) sets are disjoint if they have no common element. Their intersection is identical to the null or empty set.