The arrow notation shows that the function maps \(x\) to \(x^2\).
箭头记号表示这个函数把 \(x\) 映射到 \(x^2\)。
In formal logic, arrow notation like \(P \Rightarrow Q\) is used to express implication, which helps make proofs precise and readable.
在形式逻辑中,像 \(P \Rightarrow Q\) 这样的箭头记号用来表达“蕴含”,能让证明更严谨、更易读。