Generalized conformal derivations of Lie conformal algebras
  Let $R$ be a Lie conformal algebra. The purpose of this paper is to investigate the conformal derivation algebra $CDer(R)$, the conformal quasiderivation algebra $QDer(R)$ and the generalized conformal derivation algebra $GDer(R)$. The generalized conformal derivation algebra is a natural generalization of the conformal derivation algebra. Obviously, we have the following tower $CDer(R)\subseteq QDer(R)\subseteq GDer(R)\subseteq gc(R)$, where $gc(R)$ is the general Lie conformal algebra. Furthermore, we mainly research the connection of these generalized conformal derivations. Finally, the conformal $(\alpha,\beta,\gamma)$-derivations of Lie conformal algebras are studied. Moreover, we obtain some connections between several specific generalized conformal derivations and the conformal $(\alpha,\beta,\gamma)$-derivations. In addition, all conformal $(\alpha,\beta,\gamma)$-derivations of finite simple Lie conformal algebras are characterized. 
Guangzhe Fan, Yanyong Hong, Yucai Su
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