Law of identity
In logic, the law of identity states that each thing is identical with itself. It is the first of the historical three laws of thought, along with the law of noncontradiction, and the law of excluded middle. However, no system of logic is built on just these laws, and none of these laws provide inference rules, such as modus ponens or DeMorgan's laws.
A=AAAA = AA Streetcar Named MargeA is AA is aA rose by any other name would smell as sweetAbsolute idealismAfrikan SpirApples and orangesAtlas ShruggedBenacerraf's identification problemCornelius CastoriadisCurry's paradoxDegree of truthEither/OrI Am What I AmIdentityIdentity (philosophy)Identity principleIndex of ancient philosophy articlesIndex of logic articlesIndex of philosophy articles (I–Q)Jonathon KeatsL-systemLaw of IdentityLaw of excluded middleLaw of noncontradictionLaw of thoughtMetaphysicsNaive dialecticismNijaz IbruljNon-classical logicNull (SQL)ObjectivismOtto WeiningerOutline of logicPersonal identityPrinciple of identityPrinciple of sufficient reason
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Law of identity
In logic, the law of identity states that each thing is identical with itself. It is the first of the historical three laws of thought, along with the law of noncontradiction, and the law of excluded middle. However, no system of logic is built on just these laws, and none of these laws provide inference rules, such as modus ponens or DeMorgan's laws.
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El principi d'identitat és un ...... at sobre tot tipus d'entitats.
@ca
El principio de identidad es u ...... idades, no solo proposiciones.
@es
In logic, the law of identity ...... otion of identity or equality.
@en
Le principe d'identité affirme ...... principe de raison suffisante.
@fr
O princípio da identidade foi ...... objeto é idêntico a si mesmo.
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Zasada (prawo) tożsamości, zas ...... rzedmiotów nierozróżnialnych).
@pl
Για σύνολα η αρχή της ταυτότητ ...... (ii) τη διάταξη των στοιχείων.
@el
Зако́н то́ждества — принцип по ...... йство , то имеет это свойство.
@ru
Закон тотожності (лат.lex iden ...... ньогрецький вчений Арістотель.
@uk
在逻辑中，同一律声称 A = A。任何自反关系都支持同一律； ...... 自己是客观主义的代表人物，经常称呼他的超级英雄之一为 ""。
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El principi d'identitat és un ...... x, x és idèntica a si mateixa.
@ca
El principio de identidad es u ...... d x, x es idéntica a sí misma.
@es
In logic, the law of identity ...... dus ponens or DeMorgan's laws.
@en
Le principe d'identité affirme ...... « Ce qui est vrai est vrai ».
@fr
O princípio da identidade foi ...... objeto é idêntico a si mesmo.
@pt
Zasada (prawo) tożsamości, zas ...... rzedmiotów nierozróżnialnych).
@pl
Για σύνολα η αρχή της ταυτότητ ...... (ii) τη διάταξη των στοιχείων.
@el
Зако́н то́ждества — принцип по ......
* «≡» — знак эквивалентности.
@ru
Закон тотожності (лат.lex iden ...... ньогрецький вчений Арістотель.
@uk
在逻辑中，同一律声称 A = A。任何自反关系都支持同一律； ...... 自己是客观主义的代表人物，经常称呼他的超级英雄之一为 ""。
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label
Law of identity
@en
Principe d'identité
@fr
Principi d'identitat
@ca
Principio d'identità
@it
Principio de identidad
@es
Princípio da identidade
@pt
Zasada tożsamości
@pl
Ταυτότητα (μαθηματικά)
@el
Закон тождества
@ru
Закон тотожності
@uk