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 A note on generalized derivations as a Jordan homomorphisms Bull. Korean Math. Soc.Published online February 13, 2020 C. Arusha and S. K. Tiwari Indian Institute of Science Education and Research Bhopal Abstract : Let $R$ be a prime ring of characteristic different from $2$. Suppose that $F$, $G$, $H$ and $T$ are generalized derivations of $R$. Let $U$ be the Utumi quotient ring of $R$ and $C$ be the center of $U$, called the extended centroid of $R$ and let $f(x_1,\ldots,x_n)$ be a non central multilinear polynomial over $C$. If \bea &F(f(r_1,\ldots,r_n))G(f(r_1,\ldots,r_n))-f(r_1,\ldots,r_n)T(f(r_1,\ldots,r_n))\nn\\ &=H(f(r_1,\ldots,r_n)^2)\nn \eea for all $r_1, \ldots, r_n \in R$, then we describe all possible forms of $F$, $G$, $H$ and $T$. Keywords : Generalized derivations, Jordan homomorphism, multilinear polynomials, Utumi quotient ring, extended centroid MSC numbers : 16W25, 16N60 Full-Text :