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Unary operation

In mathematics, a unary operation is an operation with only one operand. For instance, logical negation is a unary operation on truth values and squaring is a unary operation on the real numbers. A unary operation on the set S is nothing but a function S → S.

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... creed ("Apostles' Creed"). Regional churches may also adopt the Canons of Dordt[?], and in Transylvania Luther's Small Catechism[?] is adopted. Reformed Church of ...