Current location - Training Enrollment Network - Mathematics courses - ]→ or
]→ or
What I see is what I use to represent the mapping.

|→ indicates the corresponding relationship between independent variables and dependent variables.

For example, if F is the mapping from set A to set B, and any element A in A is replaced by f(a), then the expression is as follows:

F: A→B (there are only arrows here)

A|→f(a) (there is a vertical line here)

The reason why a short vertical line is added is to distinguish it from the above set of relationships.