These line bundles can also be described in the language of divisors. Let "H" = CP"n"−1 be a given complex hyperplane in CP"n". The space of meromorphic functions on CP"n" with at most a simple pole along "H" (and nowhere else) is a one-dimensional space, denoted by "O"("H"), and called the hyperplane bundle. The dual bundle is denoted "O"(−"H"), and the "k"th tensor power of "O"("H") is denoted by "O"("kH"). This is the sheaf generated by holomorphic multiples of a meromorphic function with a pole of order "k" along "H". It turns out that