Clerc, Jean-Louis
(Symmetry, Integrability and Geometry: Methods and Applications, 2017)
A family (Dλ)λ∈C of differential operators on the sphere Sⁿ is constructed. The operators are conformally covariant for the action of the subgroup of conformal transformations of Sⁿ which preserve the smaller sphere Sⁿ⁻¹ ...