Definition is the cognitive behavior that the cognitive subject uses the linguistic logic form of judgment or proposition to determine the position and boundary of an object or thing in the comprehensive classification system of related things, so as to make this object or thing stand out from the comprehensive classification system of related things.

The concept of proposition is a phenomenon that can be defined and observed. Proposition refers not to the judgment (statement) itself, but to the semantics expressed. When different judgments (statements) have the same semantics, they express the same proposition.

In other words, the definition is artificially defined, the proposition is a judgment sentence, the proposition is true or false, and the definition is not.

Extended data:

Classification of propositions:

1, for two propositions, if the conditions and conclusions of one proposition are the conclusions and conditions of another proposition, then these two propositions are called? Reciprocal propositions, one of which is called the original proposition and the other is called the original proposition? Inverse proposition.

2. For two propositions, if the conditions and conclusions of one proposition are the negation of the conditions and conclusions of the other proposition, then these two propositions are called reciprocal propositions, and one of them is called? The original proposition and the other proposition are called the negative proposition of the original proposition.

3. For two propositions, if the conditions and conclusions of one proposition are the negation of the conclusions and conditions of another proposition, then these two propositions are called? Reciprocal negative propositions, one of which is called. The original proposition and another proposition are called negative propositions of the original proposition.

Baidu Encyclopedia-Mathematical Proposition