Unary function, a function that takes one argument; in computer science, a unary operator is a subset of unary function
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Unary operation, a kind of mathematical operator that has only one operand
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Unary numeral system, the simplest numeral system to represent natural numbers
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Unary coding, an entropy encoding that represents a number n with n − 1 ones followed by a zero
Unary operation | unary operation | Unary numeral system | Unary function | Unary coding |