母函数 Traditional form: 母函數 Pinyin (reading): mǔhánshù Definitions: generating function (math.) Characters: 母 - mother; female elders; female 函 - correspondence; a case, a box 数 - count, number, several Traditional characters: 母 - mother; female elders; female 函 - correspondence; a case, a box 數 - count, number, several