你即將離開本站

並前往https://math.stackexchange.com/questions/1751187/what-does-the-function-f-x-%E2%86%A6-y-mean/1751194

What does the function f: x ↦ y mean? - Mathematics Stack ...

There is another arrow-symbol, which also used for mapping →, which might be a bit confusing. The difference between two (as it is mentioned in the linked ...

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