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In mathematics, a property is any characteristic that applies to a given set. Rigorously, a property p defined for all elements of a set X is usually defined as a function p: X → {true, false}, that is true whenever the property holds; or equivalently, as the subset of X for which p holds; i.e. the set {x | p(x) = true}; p is its indicator function. However, it may be objected that the rigorous definition defines merely the extension of a property, and says nothing about what causes the property to hold for exactly those values.

Property Value
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  • In mathematics, a property is any characteristic that applies to a given set. Rigorously, a property p defined for all elements of a set X is usually defined as a function p: X → {true, false}, that is true whenever the property holds; or equivalently, as the subset of X for which p holds; i.e. the set {x | p(x) = true}; p is its indicator function. However, it may be objected that the rigorous definition defines merely the extension of a property, and says nothing about what causes the property to hold for exactly those values. Examples of properties include: Parity is the property of an integer of whether it is even or odd. There is the commutative property of real and complex numbers and the distributive property. (en)
  • In matematica, il concetto di proprietà corrisponde all'idea intuitiva di una caratteristica che un oggetto può avere o non avere. Formalmente, una proprietà è data da una formula con una sola variabile libera . Si dirà che verifica la proprietà (o equivalentemente che la proprietà vale su ) se vale (più spesso scritto semplicemente ). Per semplificare la notazione, solitamente la proprietà si identifica con la formula e si scriverà quindi invece che o . (it)
  • 在数学中,性质是指给定集合的任何特征。严格地,性质 p 定义集合 X 中的所有元素,通常表示为这样的函数p : X → {true, false},如果性质存在,取值就是真;或者,也可以被视作是X的子集,其中p存在。也就是说,集合{x | p(x) = true}; p是其中的指示函数。但是,如果不表明什么导致性质的取值,严格定义只定义了性质的外延,这一点是可能会被拒绝的。 关于性质的例子包括实数和复数的交换性质、分配性质。 (zh)
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  • In matematica, il concetto di proprietà corrisponde all'idea intuitiva di una caratteristica che un oggetto può avere o non avere. Formalmente, una proprietà è data da una formula con una sola variabile libera . Si dirà che verifica la proprietà (o equivalentemente che la proprietà vale su ) se vale (più spesso scritto semplicemente ). Per semplificare la notazione, solitamente la proprietà si identifica con la formula e si scriverà quindi invece che o . (it)
  • 在数学中,性质是指给定集合的任何特征。严格地,性质 p 定义集合 X 中的所有元素,通常表示为这样的函数p : X → {true, false},如果性质存在,取值就是真;或者,也可以被视作是X的子集,其中p存在。也就是说,集合{x | p(x) = true}; p是其中的指示函数。但是,如果不表明什么导致性质的取值,严格定义只定义了性质的外延,这一点是可能会被拒绝的。 关于性质的例子包括实数和复数的交换性质、分配性质。 (zh)
  • In mathematics, a property is any characteristic that applies to a given set. Rigorously, a property p defined for all elements of a set X is usually defined as a function p: X → {true, false}, that is true whenever the property holds; or equivalently, as the subset of X for which p holds; i.e. the set {x | p(x) = true}; p is its indicator function. However, it may be objected that the rigorous definition defines merely the extension of a property, and says nothing about what causes the property to hold for exactly those values. (en)
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  • Proprietà (matematica) (it)
  • Property (mathematics) (en)
  • 性质 (数学) (zh)
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