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Another Approach to Juhl's Conformally Covariant Differential Operators from $S^n$ to $S^{n-1}$
Symmetry, integrability and geometry: methods and applications, Tome 13 (2017) Cet article a éte moissonné depuis la source Math-Net.Ru

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A family $({\mathbf D}_\lambda)_{\lambda\in \mathbb C}$ of differential operators on the sphere $S^n$ is constructed. The operators are conformally covariant for the action of the subgroup of conformal transformations of $S^n$ which preserve the smaller sphere $S^{n-1}\subset S^n$. The family of conformally covariant differential operators from $S^n$ to $S^{n-1}$ introduced by A. Juhl is obtained by composing these operators on $S^n$ and taking restrictions to $S^{n-1}$.
Keywords: conformally covariant differential operators; Juhl's covariant differential operators. 
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     author = {Jean-Louis Clerc},
     title = {Another {Approach} to {Juhl's} {Conformally} {Covariant} {Differential} {Operators} from $S^n$ to $S^{n-1}$},
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     url = {http://geodesic.mathdoc.fr/item/SIGMA_2017_13_a25/}
}
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Jean-Louis Clerc. Another Approach to Juhl's Conformally Covariant Differential Operators from $S^n$ to $S^{n-1}$. Symmetry, integrability and geometry: methods and applications, Tome 13 (2017). http://geodesic.mathdoc.fr/item/SIGMA_2017_13_a25/

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