“pointwise addition”的概念、定义、翻译、参考文献-科学参考

单词	pointwise addition
释义	pointwise addition Mathematics Given two real-valued functions f,g on a set S, their sum f + g and product fg can be defined pointwise on S by $(f + g) (s) = f (s) + g (s), (f g) (s) = f (s) g (s),$ where s ε‎ S. Addition and scalar multiplication of functionals in a dual space are likewise defined pointwise. Compare componentwise.
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