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Those abstract things are then said to be multiply instantiated, in the sense of picture 1, picture 2, etc., shown below. It is not sufficient, however, to define abstract ideas as those that can be instantiated and to define abstraction as the movement in the opposite direction to instantiation. Doing so would make the concepts "cat" and ...
In philosophy and the arts, a fundamental distinction exists between abstract and concrete entities. While there is no universally accepted definition, common examples illustrate the difference: numbers, sets, and ideas are typically classified as abstract objects, whereas plants, dogs, and planets are considered concrete objects.
A representation of the concept of a tree. The four upper images of trees can be roughly quantified into an overall generalization of the idea of a tree, pictured in the lower image. A concept is an abstract idea that serves as a foundation for more concrete principles, thoughts, and beliefs. [1]
A priori and a posteriori; A series and B series; Abductive reasoning; Ability; Absolute; Absolute time and space; Abstract and concrete; Adiaphora; Aesthetic emotions
Abstraction is the thought process in which ideas are distanced from objects. Abstraction uses a strategy of simplification of detail, wherein formerly concrete details are left ambiguous, vague, or undefined; thus speaking of things in the abstract demands that the listener have an intuitive or common experience with the speaker, if the speaker expects to be understood.
Examples of concrete concepts in learning are early educational math concepts like adding and subtracting. Abstract concepts are words and ideas that deal with emotions, personality traits and events. [8] Terms like "fantasy" or "cold" have a more abstract concept within them.
An example of a mental construct is the idea of class, or the distinguishing of two groups based on their income, culture, power, or some other defining characteristic(s). An operational definition specifies concrete, replicable procedures that reliably produce a differentiated, measurable outcome.
Object abstraction, or simply abstraction, is a concept wherein terms for objects become used for more abstract concepts, which in some languages develop into further abstractions such as verbs and grammatical words (grammaticalisation). Abstraction is common in human language, though it manifests in different ways for different languages.