不动点定理 bùdòngdiǎndìnglǐ fixed-point theorem Origin Definitions Defs Strokes Stroke Words Sentences Sents 不动点 不動點 bùdòngdiǎn fixed point (mathematics) a value that remains unchanged under a given transformation or mapping定理 dìnglǐ theorem (mathematics or logic) a statement or formula that has been proven to be true based on established principles