Abstract
In this paper, we prove that if the derivatives of two nonconstant meromorphic functions $f$ and $g$ share three small functions CM$^*$, or share two small functions CM$^*$ and another two small functions IM$^*$, then $f'=g'$ or $f'$ is a quasi-M\"{o}bius transformation of $g'$ mostly.
Citation
Ping Li. Yi Zhang. "Meromorphic functions whose derivatives share small functions." Kodai Math. J. 27 (3) 261 - 271, October 2004. https://doi.org/10.2996/kmj/1104247350
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