Binary function

In mathematics, a binary function, or function of two variables, is a function that takes two inputs.

Precisely stated, a function $f$ is binary if there exists sets $X, Y, Z$ such that

\,f \colon X \times Y \rightarrow Z

where $X \times Y$ is the Cartesian product of $X$ and $Y.$

单词	Binary function
释义	Binary function 英语百科 Binary function In mathematics, a binary function, or function of two variables, is a function that takes two inputs. Precisely stated, a function $f$ is binary if there exists sets $X, Y, Z$ such that $\,f \colon X \times Y \rightarrow Z$ where $X \times Y$ is the Cartesian product of $X$ and $Y.$
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