What is the mapping in mathematics? Who can explain it to me? You'd better give me some questions, the kind with moderate difficulty, and you'd better explain the concept to me. - Training Enrollment Network

What is the mapping in mathematics? Who can explain it to me? You'd better give me some questions, the kind with moderate difficulty, and you'd better explain the concept to me.

Mapping refers to the correspondence between elements in two clusters. You only need to see the keys, elements, and corresponding elements.

such as

1

b 1

c 2

d 3

A is opposite to 1, B is opposite to 1, C is opposite to 2, and D is opposite to 3.

In this way, whether it is one-to-one mapping or other forms, it is clear: it is the relationship between elements! Just find the observation object.

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