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Uniqueness is a state or condition wherein someone or something is unlike anything else in comparison, or is remarkable, or unusual. [1] When used in relation to humans, it is often in relation to a person's personality, or some specific characteristics of it, signalling that it is unlike the personality traits that are prevalent in that individual's culture. [2]
In mathematics and logic, the term "uniqueness" refers to the property of being the one and only object satisfying a certain condition. [1] This sort of quantification is known as uniqueness quantification or unique existential quantification, and is often denoted with the symbols "∃!" [2] or "∃ =1". For example, the formal statement
Unique primarily refers to: Uniqueness , a state or condition wherein something is unlike anything else In mathematics and logic, a unique object is the only object with a certain property, see Uniqueness quantification
Sui generis (/ ˌ s uː i ˈ dʒ ɛ n ər ɪ s / SOO-ee JEN-ər-iss, [1] Classical Latin: [ˈsʊ.iː ˈɡɛnɛrɪs]) is a Latin phrase that means "of its/their own kind" or "in a class by itself", therefore "unique". [2] Several disciplines use the term to refer to unique entities. These include:
The notion of essential uniqueness presupposes some form of "sameness", which is often formalized using an equivalence relation. A related notion is a universal property, where an object is not only essentially unique, but unique up to a unique isomorphism [1] (meaning that it has trivial automorphism group). In general there can be more than ...
Dogs are also dichromats, meaning they can only detect blue and yellow colors, while humans are trichromats and can detect blue, green, and red. This makes a dog’s color vision similar to people ...
The term Globally Unique Identifier (GUID) is also used, mostly in Microsoft systems. [1] [2] When generated according to the standard methods, UUIDs are, for practical purposes, unique. Their uniqueness does not depend on a central registration authority or coordination between the parties generating them, unlike most other numbering schemes.
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