どういつせい
同一性
1. identity
2. Law of identityThis article uses forms of logical notation. For a concise description of the symbols used in this notation, see List of logic symbols. In logic, the law of identity is the first of the so-called three classic laws of thought. It states that an object is the same as itself: A → A (if you have A, then you have A); While this can also be listed as A ≡ A (A if-and-only-if A) this is redundant. Any reflexive relation upholds the law of identity.
Read “Law of identity” on English Wikipedia
Read “同一性” on Japanese Wikipedia
Read “Law of identity” on DBpedia
Read “Law of identity” on English Wikipedia
Read “同一性” on Japanese Wikipedia
Read “Law of identity” on DBpedia
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