Abstract
Let f be a nonconstant meromorphic function such that \({\overline{N}(r, f) < \lambda T(r, f)}\), where \({\lambda \in [0, \frac{1}{9})}\), and let a, b be two distinct finite values. If f and f′ share a, b IM, then \({f \equiv f'}\).
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This work is supported by NNSF of China (NO. 11171013).
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Li, S. Meromorphic Functions Sharing Two Values IM with Their Derivatives. Results. Math. 63, 965–971 (2013). https://doi.org/10.1007/s00025-012-0246-x
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DOI: https://doi.org/10.1007/s00025-012-0246-x