. . "1012428193"^^ . . . . . . . . . "A unary function is a function that takes one argument. A unary operator belongs to a subset of unary functions, in that its range coincides with its domain."@en . "1514907"^^ . "Unary function"@en . "A unary function is a function that takes one argument. A unary operator belongs to a subset of unary functions, in that its range coincides with its domain."@en . . "1638"^^ .