biunique

/baɪjuːˈniːk/
adjective
  1. Describing a relationship between two sets where each element in one set is paired with exactly one element in the other set, and vice versa.
    • A biunique function is also called a one-to-one correspondence in mathematics.
    • In a biunique code, every letter corresponds to one number, and every number corresponds to one letter.
    • The encryption system uses a biunique mapping to ensure no two messages share the same key.
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