Set language is the basic language of modern mathematics, which can express mathematical content concisely, accurately and normatively. In this section, we learn some basic knowledge of set, express mathematical objects and mathematical problems in the most basic set language, and can convert between natural language, graphic language and set language.
Extended data
On different occasions, the same word may or may not express the concept of set. For example, "man" is a set concept in the judgment that "man is transformed from an ape", because not everyone has the nature of being transformed from an ape; In the judgment of Zhang San is a man, "man" is a non-set concept, which refers to an animal like man or one of its molecules.
To distinguish whether a word expresses the concept of set depends on the language environment, that is, to associate every object in a certain field with the nature reflected by the concept. Accurately distinguishing set concepts from non-set concepts is helpful to avoid logical errors that confuse concepts.
Baidu Encyclopedia-Set Concept
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