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A succinct, equivalent formulation which avoids these problems uses universal quantification: For each natural number n, n · 2 = n + n. A similar analysis applies to the disjunction, 1 is equal to 5 + 5, or 2 is equal to 5 + 5, or 3 is equal to 5 + 5, ... , or 100 is equal to 5 + 5, or ..., etc. which can be rephrased using existential ...
In semantics and mathematical logic, a quantifier is a way that an argument claims that an object with a certain property exists or that no object with a certain property exists. Not to be confused with Category:Quantification (science) .
In symbolic logic, the universal quantifier symbol (a turned "A" in a sans-serif font, Unicode U+2200) is used to indicate universal quantification. It was first used in this way by Gerhard Gentzen in 1935, by analogy with Giuseppe Peano's (turned E) notation for existential quantification and the later use of Peano's notation by Bertrand Russell.
Quantifier may refer to: Quantifier (linguistics), an indicator of quantity; Quantifier (logic) Quantification (science) See also. Quantification (disambiguation)
Lindström quantifiers generalize first-order quantifiers, such as the existential quantifier, the universal quantifier, and the counting quantifiers. They were introduced by Per Lindström in 1966. They were later studied for their applications in logic in computer science and database query languages .
Filter quantifiers are a type of logical quantifier which, informally, say whether or not a statement is true for "most" elements of . Such quantifiers are often used in combinatorics , model theory (such as when dealing with ultraproducts ), and in other fields of mathematical logic where (ultra)filters are used.
In predicate logic, what is described in layman's terms as "something" can more specifically be regarded as existential quantification, that is, the predication of a property or relation to at least one member of the domain. It is a type of quantifier, a logical constant which is interpreted as
Quantifier elimination is a concept of simplification used in mathematical logic, model theory, and theoretical computer science.Informally, a quantified statement "such that …" can be viewed as a question "When is there an such that …?", and the statement without quantifiers can be viewed as the answer to that question.