Also known as involutory function, involutive function, self-inverse function
function that is its own inverse
Article · 中文
在数学中，对合（英語：involution）或对合函数，是逆函数等于自身的函数，就是说 f(f(x)) = x 对于所有 f 的定义域中的 x。
Abstract from DBpedia / Wikipedia · CC BY-SA
Also known as involutory function, involutive function, self-inverse function
function that is its own inverse
在数学中，对合（英語：involution）或对合函数，是逆函数等于自身的函数，就是说 f(f(x)) = x 对于所有 f 的定义域中的 x。
Abstract from DBpedia / Wikipedia · CC BY-SA