Let UC be open, z0U, and f:UC be holomorphic. Further suppose that z0 is a zero of f of order m>1. Then on some neighborhood Br(z0) of f, there exists a 1;;holomorphic mth root of f. That is, there exists h:Br(z0)C such that f(z)=(h(z))m for all zBr(z0). Furthermore, this choice of h is unique up to a choice of an mth root of unity.

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