定理 Traditional form: 定理 Pinyin (reading): dìnglǐ Definitions: theorem Characters: 定 - to decide, to fix, to settle; to order; definite, fixed, sure 理 - science, reason, logic; to manage Traditional characters: 定 - to decide, to fix, to settle; to order; definite, fixed, sure 理 - science, reason, logic; to manage