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Sigma KEE - Abstract
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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
抽象体
这些特质或质量,和任何以物理媒介化身的特质/质量不同。抽象 的实例在意义上,可以说是像数学物体如集合和关系般存在,但是它们不能没有任何物理编码或化身便存在于特定的时间 和地点。
Relationships      
Parents 实体 The universal class of individuals. This is the root node of the ontology.
Children 属性Qualities which we cannot or choose not to reify into subclasses of.
 模型An abstract object that models certain aspect of a physical object, is subject to abstraction and idealization.
 流程任务A function to be performed.
 命题Propositions are Abstract entities that express a complete thought or a set of such thoughts. As an example, the formula '(instance Yojo Cat)' expresses the Proposition that the entity named Yojo is an element of the Class of Cats. Note that propositions are not restricted to the content expressed by individual sentences of a Language. They may encompass the content expressed by theories, books, and even whole libraries. It is important to distinguish Propositions from the ContentBearingObjects that express them. A Proposition is a piece of information, e.g. that the cat is on the mat, but a ContentBearingObject is an Object that represents this information. A Proposition is an abstraction that may have multiple representations: strings, sounds, icons, etc. For example, the Proposition that the cat is on the mat is represented here as a string of graphical characters displayed on a monitor and/or printed on paper, but it can be represented by a sequence of sounds or by some non-latin alphabet or by some cryptographic form.
 数量Any specification of how many or how much of something there is. Accordingly, there are two subclasses of Quantity: Number (how many) and PhysicalQuantity (how much).
 关系The Class of relations. There are three kinds of Relation: Predicate, Function, and List. Predicates and Functions both denote sets of ordered n-tuples. The difference between these two Classes is that Predicates cover formula-forming operators, while Functions cover term-forming operators. A List, on the other hand, is a particular ordered n-tuple.
 集或类The SetOrClass of Sets and Classes, i.e. any instance of Abstract that has elements or instances.


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