For example, in the definition of "bachelor is unmarried man", "bachelor" is the definition item, and "unmarried man" is the definition item. Both "A" and "Yes" in the definition can be replaced by symbols, such as the symbol: =, and the above definition can be translated as "bachelor: = unmarried man". Generally speaking, the definition, like the above example, is often a sentence that expresses the equivalence between the defined item and the defined item.
Meaning has different ways and techniques:
Lexical definition describes the meaning of a word or an expression. Generally speaking, a lexical definition provides an expression equivalent to the original word. For example, "bachelor" is defined as "unmarried man" or "frying" is defined as "burning in hot oil". Some words, such as "if", cannot be effectively described synonymously with other words. Dictionaries usually define these words by describing their characteristics, rather than providing equivalent expressions.
Context definition is also called context definition. Some words cannot be clearly defined, but you can define them by providing explanations for all the sentences in which the word appears. In other words, use a sentence where a word does not appear to explain the meaning of this word in this sentence.
Connotation definition is to list all the characteristics of an object that are different from other objects. For example, "the set of all prime numbers less than 20" is the connotation definition of a specific set.
Extension definition is to describe the extension of a concept or word, that is, all the transactions contained in this concept or word.
Enumeration definition is a special extended definition, which lists all the objects described by a concept or word. Enumeration definition only applies to finite sets, and it only makes sense if this set is small.
Physical definition is also called intuitive explanation or real definition. The definition of physical object refers to specifying the object represented by a word to express the meaning of the word, or specifying several representative objects to express the meaning of the word. One example is to show someone an image of jimmy wales to illustrate the meaning of the word "jimmy wales", or to show someone some typical dogs to illustrate the concept of "dog".
The operational definition of a quantity is the measurement process of this quantity.
The theoretical definition is to define a word with the theory of a discipline, such as "the meter is the distance traveled by light in vacuum 1/299792458 seconds". This definition is based on special relativity.
According to the definition of category and difference, first list a generalized word of a narrow word, and then explain the difference between this narrow word and the objects in this generalized word that do not belong to this narrow word.
Recursive definition, also known as inductive definition, defines itself in a meaningful way with one word. Generally speaking, such a definition includes two steps: first, one or several specific objects belong to the set X of definition items; Secondly, all objects that have a certain relationship with the elements in X belong to X. For example, the following is the recursive definition of natural numbers: first, 1 is a natural number, and then the number that is larger than the natural number 1 is also a natural number, and the other numbers are not natural numbers. When making recursive definitions, pay attention to avoid circular definitions.
The loop definition assumes that others already know some information about the defined item. For example, "the egg is laid by a chicken, and the chicken is hatched from an egg" is such a circular definition. This definition is useless if others don't know what a chicken is and what an egg is. (See tautology)
A prescriptive definition, also known as a prescriptive definition or a conventional definition, refers to what is defined or discussed within a range. For example, some people want to explain how beer is brewed, but they don't know if sake is a kind of beer. He can start by saying, "When I say beer, I only include beer brewed from wheat."
Deterministic definition is to add additional conditions to lexical definition to expand the definition in lexical definition and further narrow the definition specification.
Persuasive definition, also known as persuasive definition, refers to the reason for defining a word as a special point of view, but it maintains the form of lexical definition.
To analyze the quality of a definition, we should pay attention to its characteristics, and the most important thing is its extension, connotation, ambiguity and ambiguity.
List definitions and point out some examples to make the other person realize the meaning of a word.
The extended definition lists all the elements of the word.
Connotation definition lists the characteristics of a word, which is often more compact than extension definition.
For example, if the word "bachelor" is to be defined in an extended way, hundreds of millions of bachelors in the world should be listed, but if the connotation is defined, bachelors are men first and then unmarried, so all bachelors are unmarried men, and only bachelors are unmarried men.
For philosophers, the connotation of definition is much more important than the extension. For example, we can't list all the bachelors in the world, and we are not interested in such a list. We care about the difference between bachelor and non-bachelor. The bachelor list can't indicate whether a new person is a bachelor or not.
If the definition is not clear, there are two reasons A definition may be vague, ambiguous, or both. In fact, most of the words are ambiguous and ambiguous. This does not mean that these words are meaningless, even words that are unclear and contain multiple meanings have their meanings.
Definition refers to specifying something with something. Generally speaking, it is a summary of something.
Traditional logic thinks that definition is a short and clear proposition, which reveals the essence of things reflected by concepts.
Aristotle of ancient Greece discussed what is definition and how to define it in Argument. He defined definition as "a short sentence indicating the essence of things".
Definition, also called "definition" A method to reveal the meaning of a concept or a word. The definition of revealing concept connotation is called entity definition, and the definition of revealing word meaning is called word definition. The most representative is the definition of genus and species in the substantive definition, that is, to include a concept in its genus concept and reveal its difference from other concepts under the same genus concept, that is, the difference of species. For example, when defining the concept of "person", it is pointed out that the generic concept of "person" is "animal"; Under the general concept of "animal", the difference between "man" and other animals lies in "being able to make production tools", which leads to the definition of "man is an animal that can make production tools". The formula of this definition is: the concept of definition = genus+species difference. The rules of definition are: (1) should be commensurate, that is, the extension of the defined concept is equal to that of the defined concept; (2) It should not be circulated; (3) Generally, it should not be a negative judgment; (4) Be clear and accurate. Dialectical logic requires a comprehensive study of all the relations of an object from the development and change of the object reflected by a certain concept. "All human practices must be regarded as the standard of truth and the actual decider of the connection of things people need, including the complete' definition' of things" (Complete Works of Lenin, Vol. 40, p. 29 1-292).
Proposition is used to specify the content or outline of the composition!
Simply put:
Definition is to describe or standardize the meaning of a word or a concept by enumerating the basic attributes of a thing or an object. A defined thing or object is called a definition item, and its definition is called a definition item.
Proposition is used to specify the content or outline of the composition!